De thi co so ly thuet hoa hoc 2

S6 8 n6i eo phai la hinh anh dung bi~u dien obitan nguyen tu p ki~u hidro o I~ AO-p theo quan ni~m d~y du cua Hoa hQe luqng tu khong0 Hay trinh bay C\l th~ eo hinh ve minh hQa e~n thi€t [r]

~ ~,~ CONG HOA xii HOI CHU NGHIA VIET NA:V! DQcI~p -~-~:o~~=-~~ phuc DE THI TUYEN SINH CAO HQC NAM 2009 TRUONG D~ HQC SIT P~M HA NOI Man thi: CO' sO' ly thuy~t hoa Thai gian lam bai: 180 phut( kh6ng Ice'thai gian phat dJ) NguOi thi kh6ng su dl;mg tai li¢U T~ : L"! ~I/~Ya:' It Ul Y [ f'" J'~ ~1-f I ~'-lN'-., l~ 'U ( L(/ C1 L.! o? NQi dung d~ thi (Dri g6m trang) call I S6 n6i eo phai la hinh anh dung bi~u dien obitan nguyen tu p ki~u hidro o I~ (AO-p) theo quan ni~m d~y du cua Hoa hQe luqng tu khong0 Hay trinh bay C\l th~ (eo hinh ve minh hQa e~n thi€t kem theo) Ap d\lng bi~uthuc thu duqc giai phuong trinh Srodingo eho h~ electro~ U I~ h~t nhan, hay tinh cae tri nang luqng E2, E3, E4 cua Be3+ (Z=4) theo kJ/mo! C6 tri nilO tri s6 d6 la nang luqng tr~mg thai eo ban eua h~ na), ha)i khong? T~i sao? ' Bi~t: e V = 1,602.10.191; NA = 6,022.1023 mOrl Co nguyen t6 hoa hQe Cr (2 =,24) a) Hay trinh bay, chi ti~t va k~t qua vi~t c~u hinh,electron cua ~guy¢n tu; b) D~ng dan chat cua nguyen to co tinh chat haa hQc dien hinh nao? T?i sao? Hay vi~t mot phuong trinh phein Lmg minh hQa c) Hay trinh bay chi ti~t va k~t qua tim s6 h~mg co ban cua: Cro; Cr2+ -\6 Ciill II co o M I.Thl,1~ nghi~m cho bi~t NO; hinh tam giac d~u (~am la N, dint lei 0), cac lien ket N-O co QQ dAi nhu nhau, di~n tich giai taa deu tren cac O DlJa vao cong thuc Lewis, m6 hinh VSEPR, hay giai thich Nita NO~ co hoa tri bfrng bao '1/ b nhieu theo thuy~t spin? T~i sao? Dl,1a vao du t?O phan tv theo thuy~t MO (co ve giiw 0<3 nang luqng cua phin ttr), hay giai thfeh ket qua thvc nghi~m: oxi thu~n tv C6 phan tlr hexa-I ,3,5-trien (C6Hg) a) Ap d\lng bi~u thuc nang luqng h9t chuy~n d9ng tv h9P lh~ 1119l chi~u, hay tfnh nang luqng h~ cae e-pi (11:) eua ph an tu; b) Hay tinh s6 song, ~, (theo m-I) Ie-pi d6 bi kich thich tu HOMO len LUMO Bi~t: m~ =9, ILl 0-31 kg; c=3.1 og m/s; d= 1,4.1 O·IUm; h=6,625.1 0·3-11.S CfiuIIl Cho cae ph an ung di~n qrc cung cac th~ chLlan tuang ung: f F e 3+ + e Cr20/ + 14J-f + 6e Mn04" + SI1 + 5e +-+ ° F eEl 2+ = 0,77V J 2Cr + + 7H20 E02::: 1,33V +-+ Mn + + 4H20 E02 = 1,52V Sn4+ + 2e ~~ 5n2+ E04 = 0, 15V J a Sl,l oxi h6a Fe - Fe + c6 th~ xay cae dung dich nao duoi day: - Dung dich K2Cr207 m6i tnrcmg axit - Dung djch KMn04 m6i truOng axit - +-+ Dung djch SnCLt b Vi~t sa d6 pin di~n phu hqp vOi (a) r6i dnh sue di~n dQng chu~n Ciiu IV 86i veri phan Lmg r + ocr -.cr + or xay m6i truang ki~m K~t qua t6e d(>d~u a cae n6ng d(>d~u cae eh~t nhu sau: V o1mo1.r'.s"1 CO(n/mol.r' eO(OCr)/mol.rl 1,75.10-4 0,002 0,002 S,75.1O"5 0,001 0,002 4,37.10"5 0,00 0,00 a Xac dinh b~c rieng phfuJ va b~c toan phfu-l b Vi~t phuong trinh lu~t t6c d<) c Tinh h~g s6 t6e <1<)phan Ung n6ng <1Qd~u cua r va ocr b~ng 0,00 va 0,002 Cfiu v Qua trinh khu hidro cua etan tharm etyJen 2,76atm a Xae dinh d(>ehuy~n h6a a a soooe lam ap su~t tang tu 2,657 Jen b Xac djnh Kp, K., Kc c Truong hqp d(>chuy~n h6a tang theo nhi:t d(>thi nhi~t ph an ung se mang d~u gi? , I CONG H6A xA HOt CHU NGHIA VIJ;:T NAM D¢c I~p - TV - H~nh phuc -000 - DE THr TUYEN SINH CAO HQC NAM 2008 (DQi 2) TRUONG D~I HQC SU P~M HA NOr Mon thi: CrY sa Ii thuyit H6a h9C Thai gian lam bai: 180 phut (khong k~ thai gian phiit d~) Nguai thi khong dugc su d\lng tai li~u NQi dung d~ thi: (D~ g6m 02 trang) Cau I M?t nut la gi? Hay cho bi~t s6 lugng, lo?i va hinh d~g '\ m~t nut ling vOi AO- 4dx)" M~t nut co y nghia gi? Ap dVng bi~u thuc g~n dung Slater: a)Tinh nang lugng theo kl/mol ph an lap, lap va toan nguyen tu cho cac electron nguyen tu£1o Tr! s6 nao s6 la nang lugng tr~mg thai co ban cua h~? T(;lisao? b) Tinh cac tri nang lugng ion hoa co the co theo eV cua £10.Cac tri lien h~ voi theo qui lu~t nao? T?i sac co qui lu~t do? a) Trinh bay chi ti~t va k~t qua tinh s6 h?ng co bim cho c~u hinh nr b) C~u hinh nao vo nf cling co s6 h?ng co ban t\1OTIgtv nr nay? Hay trinh bay Cl,l th~.· Cau II l.a) Thl,l'Cnghi~m cho bi~t C~ co hinh tu di~n d~u (g6c bfuJg 109°29\ Hay vi~t cong thuc Lewis va dung 010 hinh VSEPR giai thich k~t qua b), Hinh hQCphan tu CH3Cl co khac nhi~u voi c~ khong? Hay giai thich chi tieL 2.Hay cho bi~t nQi dung va y nghTa k~t qua giai bili toan phan tv H; theo phuong phap obitan phan tu (co kem theo d~y au hinh ve d~ minh h9a) 3.Thl,l'c nghi~m cho bi~t nito ngh~ch tu, khil b~n di~u ki~n thvcmg Hay trinh bay C\lth~ vi~c ap d\lng thLly~tobitan phan tu (thLly~t MO) giai thich k~t qua a CuuIII T?i 300K dQng h9C CU;]Sl,l'phan huy azometan (A) dugc nghien Ctlu dVa VaGSl,l'do ap su~t rieng cua A theo thai gian d6i voi SI!phan huy Azometan theo phan lmg: C2l-4,N2 ~ N2 + C2H6 (A) K~t qua nhu sau: (N) (E) PA (mmHg) T ( giay) o 284 100 220 150 200 250 193 170 150 a X:k dinh b~c cua phan frng va thCrigian nua phan ling b Vi~t phuang trinh Iu?t t6e de) r6i tmh t6c de) phan frng t~i thai di~m 100 giay ( t6c d9 co thu nguyen Ia n6ng de) thai gian) Call IV Cho hai C?P oxi hoa khu cling th~ chu~n t;ii 25°C: Pb2+!Pb E,D = -D,126V Snh/Sn E~ = -O,136V a Tinh cae th~ di~n c¥c k.hj n6ng de) Pb2+ bfulg O,OlM, n6ng de) Sn2+ bfu-lg 1M b Vi~t sa d6 pin di~n va tinh sue di~n de)ng cua pin c Tinh hfu1g 86 din b~ng va 6GO CUll phan ting pin Cau V D,ua 6,75g S~CI2 vao binh phim lrng dung tich 2L r6i nang nhi~t de) 1en 648K, can bang cua phan frng S02C12 (k) == S02(k) + Ch (k) xay va thu duqc 0,0345 mol SOz a Xac dinh ph~n (mol) luc din b~ng b Xac dinh hkg s6 can bfulg Kc, Kp c Xac dinh de)phan tieh a cua S02C12 d Xac d!nh nhi~t dkg ap cua phan frng bi~t r~ng t~i 303K, Kp = 0,029atm Day 1a phan frng thu nhi~t hay phar nhi~t? va t~i nhi~t d9 nao? /',' (fj)/A 2-1 Uv1- , ( 1)(1! cJ;}/) C<)NG HOA xA HOI CHU NGHlA V$T NAM D9C l~p - TlJ - H?Dh pblic -000 -DE Till TUYEN SINH CAO HQC NAM 2007 TRUONG l>~ HQC SU PRAM H.A NQI Mon thi: CO' s6' Ii thuyit Hoa hoc ThOi gian him bai: 180 phut (kh6ng ki thO'igian pfuit iJi),- iJi thi co 02 !rang NguOi thi khong du\lc dl,ing tai li¢u su Cau I Hay trinh bay djnh nghIa, nh~ xtt v€ tUng khai ni~m va chi m6i lien h~ cO ~ co giua cae khJii ni~m nay:a) Obitan nguyen ill (AO); b) Ham m~ oQ xAc su.it; c) Ham phan b6 X3.C suit theo ban kinh; d) May electron C6 th~ dUng AO-2pz ho~c AO-1s lam vi dv trlnh bay cae il9i dung tren a) Hal' trinh bay ilQi doog qui h.J.?t lien hp gifra n2.ng luQ1lgiOil h,6a thu nb~t, II, v61 so di~il tfch h~t nhan Z cae nguyen to bOa hQCtroog bang man hoan; ng~ 1~ cila qui l~t va giai thich cae il¢i dung tren b) Ap d\illg bi~u thuc gfu" dung cua Slater, hay tinb cae t:ri nang lUQ1lgion bOa cO th~ co cUa F (Z:::: 9)theo eV Hliy chi nQi dung qui l~t lien h~ cac tri 56 Day va giai tWch Cau II 1.Hay trinh bay chi t:i~t cac buoc va lolt qua vi~t cOng thlrc d.u ~ Lewis cUa NO; Hay chi r5 cae cAu t?O cQng huang (gim ~) cUa NO; Tu k~t qua nay, anhIchi cO y ki~n nhu thS nao trj cUa N dang duqc 56 don vi h6a v~ cach tinh su d\.JIlg troog giang d~y H6a hQc ph6 thong Vi~ Nam a 2.Hay trlnh bay d~g d~ cuong n¢i dung phuong phap gan dUng MO-Hucken gi8.i bai tom h~ n e 1t CUa cac hidro cacbon lien hc;rp pMng (cO neu dAy du cic bi~u thLrc, phuong trinh cAn thiSt) l(]t qua tinh nAng luqngcho buta-l,3-dien (C4I1G) lk E = - 0,618 ~; Eb = 0.+ 0,618 ~; Ec:::: 0.+ 1,618 ~; ~ == 0.- 1,618 ~ Hay trlnh bay chi ti~t va k~t qua tinh nang Im;mg giai t6a (DE) CUa buta-1 ,3 dien va neu co vai tro cm nang hn;mg Bi<h nang lugng h~ e-1t cua Etilen, e2~, la 20 + 2p Ciiu ill Phan lrng eoch (k:) =:= CO(k:) pban lrng 1;\8.10-9 atm Hay tinh dQ pharr tich 2.Tinh nhi~t till Clm + Ch (k:) xay (; 373K dum ap s~ atm Kp a cUa phan lmg eoeh ~ a 373K va apsuA! da cho nhi~ <.1(> cho bi&t 6S3']'JK ;; 125,52J1K cm 3.Gia thi~t £ill cUa phan Un~ khOng pbl,1thU¢c nhi~t d9, hay xac dinh nhi~t d9 thvc hi~n phan Ung a ap suit P = atm d6 de) phan tieh a d~t gia trj 0,1% K~t qua thu dUQc cOpM hqp vo; nguyen ly Le Chatelier kh6ng? Cho hai ~p oxi hoa kbli a 25°C va latm: Fe2+ (O,lM)/Fe th~ khir tieu chufuJ tlIong Ung Mng -O,44V va 0,8V va Ag+(o,1M)/Ag e6 Hay l~p so d6 pin vo; cae ~u cila hai qre Vi~t phan ling xay pin him vi~e Cho bi~t chi~u dong di~n ~h ngoai va tinh sUe di~n d9ng cUa pin Tinh Mng s6cl.n bkg cila phan tmg xily pin a 25°C Hay tinh cae n6ng d9 pin khOng cO kha DAngpMt di~n a nhi~t dQ 540K ngum ta tic diM the d~ dAu cila phan tmg co + N02 ~ C02 + NO va thu dlIQ"Ckth qua nh\1 sau: I' TNs6 [CO] rnoLrl [N02] mol.rl T6cdQ dAu, mol.r1.gio-l 5,1 x l~ 0,35 x 10-4 3,4 X 10-8 5,1 0,70 6,8 X 10-8 1,02 X 10-3 0,35 x lO-4 6,8 x 10-8 1,53 X 10-3 0,35 10,2 x 10-8 X 10-4 X X 10-4 10-4 toan pMn cila phim ung va eho bi~t c4mg a Xae d.jnh ~ rieng pMn, ~ cUa phuong trinh dong hQC b Tinh hAng 56 t6c dQ cUa pban ling e a thi nghi~m thli hay tinh thai a 540K_ gian Dlra phan t'mg eho N02 CONG HOA xA HOr CH0 NGHlA VI:eT NAM Doc ij.p - T\l - ~ phuc -000 -Dt THI TUYEN SINH CAD HQC NAM 2007 TRUONG D~ HQC slf PHAM HANQI Mon thi: CO' sit Ii thuyJt H6a hoc ( f)~ g8m trang ) Thm gian Tam bai: 180 philt (kh6ng Jd thm gian pMt di) NgwJ-i thi kh6ng tJuvc sU dlfng tai li¢u Cau I a) ThS mo Ia obitan nguyen tir (AO)? Hay tinh s6 Im;mg (cO dUng IlIQ11gtir) , vi~ 1cibieu AO eho lap eO n = b) Hay trlnh bay ebi tiSt va kSt qua Up bibI thue giai thich quang ph6 v~ cUa hidro (H) tlr biSu thue nang lu<;mgthu duQ'C giai phuong trinh Srodingcr eho M e, h~t nM.n Hay tinh de}dai (theo cm) cUa V?ch ngk nhfu:trong day Banmer Bi~RH= 109677 em-l C6 Au (Z=79) a) Hay trlnh bay chi ti~t co so, each viSt va kSt qua du hinh e cUa Au( cO dung B luqug tir) b) Nguyen t8 c6 tinh eMt hoa hQc di&1 Wnh MO? T~ sao? Dful mot vi d\l v8 phan (mg dS minh hQa Tim du Wnh e eO sA ~ng eer ban ta ~jl2 Tir k~t qua cO suy fa duqc ten nguyen 16 mong (mg khong? T~i sao? Caull Th\lc ngbi~ cho bi~t AsCb c6 bloh songfluang tMp tam giac, dQ dai lien k~t trvc (d.) 1611 hon dii lien k~ ~t day (de); IF j cO hinh th3p vuOng D\ra vao cOng thuc Lewis va dUng mo Wnh VSEPR gili thich cae kSt qua Ap d\lDg d6ng thai thuy6t VB, MO giai thieh lien k~ a) O2 (th\lC nghiQm cho bi~ oxi tbuan 01); b) COz y>han tlr t.bAng) Ap d\lDg mo hlnh ~t chuy&1 dong t\l hOp the chiSu cho cation Guanidin [H 2N=C (NHzht, My tinh: a) Cae t:r1nang lUQ1lg(tbeo kl/mol) cO th~ cO (bi8t ting eO mQt t:risuy bi~ bae 2); b) Nang lu<;mgM e-7t (theo kl/mol); c) Vi tri v~ch ph3 Mp th\l (56 s6ngv, theo em-l) kill e ehuyfu tir HOMO lenLUMO va Cho: mc=9,11.1O-31kg; h=6,625.1O-34J.s; c=3.1011 m/s; NA=6,022.1 023 d=1,4.1O-lom mOrl Cauill T~ nbi~ de>T va duOi ap suAt P, mQt M phan <mg chira h'.1c <liu no mol NzO ill Trong khoang nhil$t dQ ill 45°C <1~nISQoC va dum lip s.uAt latm, NZ04 bi phan tich thoo phuong trinh phan tIng: N204 = 2NOz Thanh phdn hon hop luc can bfulg duqe xac djnh thee ti kh6i hoi so veri khong Cd) K~t qua nhu sau: ;}.~ • ;.\ ;:\::" 45 60 d 2,34 2,08 a) N~u gOi a lA dQ pbin rich Nz04, bay thi8t l~p m8i quan h~ giiia d va a tOe b) Tinh exva Kp t$i 45 C Q e) Gia thiSt Mf' cUapMn img khong phl,l thuQc T, hay tinh Mr' cia phan fulg da cho d) Tinh a ~ 60 e Mutm cO gm tri a nhung 645°C thi ap suAt phai hi bao nhi~? Cau IV Cho hai ~p oxi boa 1dn'r rung cae thS chuftn wang 6ng: Fe3+/FeL+- ~o = 0,77V SnH/SnL+- E;=O,l5V a) di~u ki~ chuftn va T = 2981(, Fe3+ co oxi b6a dU<;1cSn2+ khong? Vi san? b) Vo; gia tbiAt [Felj = [Fe2j = [Sn~ = [SnL+-J= O,lM, hay thi~t ij.p pin di~ r6i tinh sue di~ dong e) Slrc di€:n dong se thay d8i th6 nao kill eho mot IU<;1ngnhe, dun¥ djeb (kbong h\m thay dAi iliA ricb) K2~O • 1M vllo ngan ebua Fe3+? Biet rtng cO ffiQt phuc du<;JC~ ra: Fe3+ + 3CzO;- = Fe(CzO;- ):- veri hkg s8 b8n 20 1&1,66.10 d) Nghien cUu n$ dQng h~e ctia phan irng oxi hoa khu 2Fe3+ + Sn2+ = 2Fe2+ + Sn•.• thA~ clng du Fe3+ thi tm cila pMn irng khon~ phV tbuoc nAng dAu cUa Sn rv~ We khao sat We rieng pMn d5i veri Fe3+ th1 thAy rtng nAng dO diu cUa Fe}+ tang gAp dOi thi thcri gian mia pill\n irng giam IAn Hay ric djnh bac rieng pbk va hac loan phk Vi~ phuang trlnh l~t tae @J) ~ CONG HOt\ XA HOI CHU NGHIA DOC L~P - Tlj DO - H~NH Dii THI TUYEN TRUONG CAV/ VlItT NAM L (lbln- (II11!J- PHUC SINH CAO HQC NAM 2007 DAI HQC SU PHAM HA NOr Mon thi: Toan cao cap (danh cho nganh hoa) Thm gian lam bai: 180 phut (khOng N gum thi khOng du'!c ke rJUri gian su dlf-ng rdi pMt dl) li¢u de thi NQi dung CAu Giai v'a bj~n lu~n h~ sau thee [ham s6 ),: X I + ),X2 + X3 + X4 = ), Xl + X2 + ),X3 + X4 = ),2 Xl + X2 + X3 + AX4 = ),3 CAu Tim d;:tng chlnh t~c va ma [r~n cua phep bien d6i tuyen tfnh kh6ng suy bien dua di,\ng toan phuang sau day ve d~g chinh tk :(~ ) rrx X Cau 1) Tim giai h;:tn: tg- Urn (2 - -)a 2a x •a 2) Tim cl!c trt cua ham s6 f(x, y) + <Xl Cau Tinh tich phAn: A( 'Jo = dx (2 )( + y4) ~(X4 x +1 x +4 - x2 r Cau Tim mi~n h(>i tt,l va tinh t6ng cua chu6i (x X X - - +ey )dx +ey X (1 - - )dy = a y + 2xy _ y2 -~ -tl: cJ-ucJ U Z ,~vi L cu f l~' >'y'}-17d~ l (G("J) to!) I ~\ ® II Y C(>NG HOA xA H(>I CHU NGHiA VlfT NAM D(>CL~-TVDO-~PHUC ;{) (De' g6m trang) DE THI TUYItN SINH SAD D-M H~C , 2006 TRUONG D-M HQC SU PH4M HA N(H Mon thi: Ca SO' li thuyit H6a hQc Thai gian hUll bai: 180 phut (khong k~ thai gian phat d~) NQi dung d~ thi: Caul I C6 nguyen t6 Xesi, Cs, vai Z = 55 1) Hay trinh bay chi tiSt cae co sa d~ viSt c~u hinh electron va k~t qua v~ du hinh electron cua Cs (c6 dUng luqng ill) '\ 2) Tim s6 h<;ll1gco ban cho Cs 3)Cs c6 tinh ch~t h6a hQc di~n hlnh nao? T(;lisao?Hay neu mQt prum Ung minh hQa II Tir lai giai phuong trinh Srodingo cho h~ 1electrron, h(;ltnhan va lien h~ gifra ~ E gifra mile En , En (ki hi~u ne, nt chi muc nang lugng ling veri s6 lm;mg ill n c· I cao (Iem) ho?c th~p (nho)) ta thu duqc bi~u thuc: V = RH( -;;, - -;;, ) I Trong d6: ( 1) C la tAn s6 v(;lchph6 (theo Hz) quang ph6 v<;lchhidro; RH la hfulg s6 Ritbe cho hidro 1) BiSu thuc ( ) tinh v?eh ph6 h~p th\l hay philt Xi).? T<;ll sao? 2) Hay cho biSt cong thtIC Cl,l th~ cua RH 3) Cho RH;::;: 3,29.1015Hz, hay tinh V cua v().chtrong day Lyman v&i I1e;::;: V Cau2 (1:1-1) I Ap dl)ng d6ng thai thuySt VB va MO, hay giai weh S\I \V1=(1/2)(~2+~3- E=a-f-l a ~o lien kSt h6a hQc trong: 1) O2, thu~n tu; 2) CO2, pharr th~ng (Co ve hlnh cho ca phan tU) II SlJ tinh MO Hueken eho CJL, enzen thu duqe: Bieu thue nang luqng(ehua Bieu thuc ham song (chua dung thu l:\I) dUn thul:\I tu \If = (1/2)( ~ 2\If ~ ~5-~6) + ~5 = (1/.J6 )( ~ 1+ ~ 2+ ~ 3+ ~ 4+ ~ + ~ ) \lf4=(1/.J6)(~1-~2+~3-~4+ \If - ~ ) ~5-~6) = (1/ /3 )( ~ I+ ~ 2/2- ~ 3/2 - ~ - ~ sl2 + ~ d2) Eb = Ee = Ed = Ee = tJ a +2~ a -~ a - 2~ a +~ Er= a +~ = (1/ /3)(~1-~2/2-~3/2+~4 -~sl2 -~d2) 1) Hay xep tuong tmg dung ham s6ng vai nang luqng va viet tlr tren xuong theo thu tlJ giam eua nang luqng (a, ~ 1aki hi~u tich pharr Cu1ong, trao d6i quen thuQc) \If 2) Ve sa 06 minh h()a tUng ham song theo qui uac thong thuemg 3) llwc nghi~m cho bi~t nang lm;mg cQng huang cua h~ la - 150kJ/mol, hay tinh tIi s6 cua dch phan p Cliu SIl trun~ hoa 2.nitrr0pr~p,an bfu1g xut dung dich dQ k (Mlphuf ) attgc bieu th.i bang phu 'Yng trinh 3163 19 k = + 11,899 nuac co hfu1g s6 t6c T 1) Hay tinh nang 1uqng ho?t hoa cUa phan img aa cho 2) Hay tinh thai gian DlIa pbful ling t?i 10°C, n6ng dQ hai ch~t bfuIg va bfuIg O,008M 3) Hay tinh t6c 09 o~u Vo cUa phan lrng Cliu Pban ling t?o photgen pha CO + Ch § 100 !:; COCh xciy t?i 394,8°C; ap su§t dAu cua Ch lei 351,4 mmHg, CO h\ 342,0 mmHg.T~i can bfuIg ap su~t b~ la 439,5 mmHg 1) Hay tinh ap sufit cua COCh t?i can bfug 2) Hay tinh cac bfmg s6 can bfulg Kc, Kp (co don vj kern theo) t?i 394,8°C 3) Xet SlJ phan tich caCh thimh , co va Ch ,cling t?i nhi~t oQ Hay tinh d9 phan dcb a cua COCh thimh san pham ap suat chung P = atm 4) Hay cho bi~t can bfulg phan dch cach san phfun thay d6i nhu th~ nao oeu them AI vao h~ t?i P = canst = 1atm? a CONG HoA xA HOJ CHU NGHlA V$T NAM DOCLAP-~DO-HANHPHOc DE TIll TUY1lli SINH SAD DJ)l HQC 2006 mlONG DAI HQC SlfP~ HA NO! MDn thi: CO SO LY THUY"ETHoA HOC Thai gjan lam bili: 180 phrit (kh()ng kc1 thOigian phil d~) N¢i dung dt thi: i I (De gom trang) Hay trln~ bay chi tie't va kt't qua l~p ham song loan ph<in m6 : bim h~ e la C+ Xet nguytn t6 hoa h9c X co s6 di~n tfeh h~t nMn Z a Hay cho bie't chi tit't cac b a C(J ta ~g thai co " = 35: sa va kt't qua vitt du runh e nguytn tti X d~ng dan ch~t nguyen t6 cO tinh ch~t hoa h9c di~n hlnh nao? T<.U sao? Ntu m¢t vi dy phan U'nghoa h(JCdt minh ho~ c 11m s6 h~g nguyen tu C(J ban cua X C6 nguytn tlr Heli tr~ng thai C(J ban a a Tfnh n~ng lugng tling e va ca h¢ cUa He theo don vi eV b Trt nAng lugng ion hoa c6 the co cUa He bang bao nhieu? T<.Usao? Xet e6ng thuc SF4: • a Tdnh bay ehi tiEt va kEt qua vi~t cOng thuc Lewis cua SF• b Theo m6 hlnh VSEPR, SF4 co the co hlnh nao? Ap dl;lng d6ng thai thuyet VB va Mo, hay giai thich 51! hlnh thaw Cl2 Phan tu thu~n hay ngh!ch tit? T<.Usao? li~n Ie€t Ap d~lOg m6 hlnh h~t chuyen Mng tt! hOp the' m¢t ehieu cho h¢ ffi<;lchha, lien hqp, phAng la Oetatetraen, hay tinh: a Nang luqng tlIng muc c6 th~ co, nang lugng h¢ ; b Vi -1t e-1t theo kJ.mo}"l tri v<:J.chphO hA'p thl;! (thea s6 song ~, em'l) Iehi 1; ehuyen den (u HOMO len LUMO Cha: c = 3.108 m.s-I ; h = 6,626.10-34 J.s; d == 1,4.10-10 m; No = 6,022.1013 morl; leV=I,602.1O-19J; m, =9,11.1O-3Ikg CAuill X6t celn b~ng trang pha hoi a 27°e: N204(h) =+ 2NOih) H~ng s6 dn b~ng Kp t~i nhi~( d¢ bang 0,17 bar a Cho biEt anh huang cua Sl! tang ap su~t P len celn bang nay? b Hay bi6u thi du61 dq.ng m¢t phuong tdnh cua Sl! phy thu<?cdQ pheln tich a cua NP4 vila hAng s6 can bilng Kp va ap sutt! toan ph1n P cua h~ can c b~ng Tinh a a ap suA'tPI ;::;1 bar va P2 ::;: 0,075 bar Blob lu~ va so sanh Ie€t qua tfnh v6i ke't lu~n tu (a) d T~i 2ye ohi~t hloh cua NP4 va N02 liin luqt b~ng 9,37 kJ.mol" va 33,89 kJ.mol"', Ch3:p nh~n nhi~t cua ph?ln ung da cho kh6ng ph\} thuc>c nhi~t d¢, hay XtlC djnh hftng s6 cAn bing Kp'o 2SOe Tfnh 60° cua phim U'ng o 25°C Blnh lu~n gl v~ phiw U'ng xily 02SOe tv Hay ehU'ng to rang mr6c dUDe axit hoa kh6ng bj khu bOi d6ng kim lo~i, song dong kim lo~i l,p khu nu6c axit hoa co hoa tan khf oxy Viet cac philo U'ng 010 biet dong kim lo~ bj oxy hoa t&i Cu" hay Cu +? b 010 bier y nghia thve ti~n cua d6ng kirn lo~ khu duqc nuo-c axit hoa co sl! hoa tan O~ (oxy tan nuo-c co ap suat rieng philn bfulg 0,21 atm) a, sv ()1O: E~., ICu = 0,34V , E~"w I H,O = 1,23V, E~u' ICu = 0,52V CAu V (} 4SOe, sV phan huy cua N20S thea phan U'ng: N20S c6 hAng 86 t6c k:: 1,20.1 0-2 - N204 + ~ O2 S-I • (} nhi~t de! nay, ngu01 ta cho vao blnh phan U'ng khl N20s dum ap suat 0,13 atm Hay tinh t6c d<)~u (0 cua phan Ung b 1mh thai gian d~ 80% N20S bi ph~ huY T~ thCti di~m 80% N20S bi a c phlln huy tinh lip suM ritng phin cua N204 va 02' Neu phan lIng dugc viet l~ dum dfng: 2N20s - 2N20 + O2 thi gia tIi eua kvavthay d6i nhu the nao? (2) 'V tif-.t LLe1> S-) IW : 1Grq I oS- 1\C tk ~ CONG HOA xA H¢I CHU NGHIA Vlt;r NAM 8¢C LAP - Tt! DO - H~NH PHUC - 000 D~ THI TUYEN SINH SAU DN HQC 2005 TRUONG D~ HOC SUPHAM HA Nor sa Mon till: Ca Ii thuyet hoa h<.>c Thili gian lam bai: 180 phUI (kMng k.J 1f0z gian phcil de') N(Ji dung de thi Cdu I 1) Hay thiet I~p bieu thuc ham song wan phan mo l<i tre:mg thai (co ban) he dc declr~ trang CT 2) 010 nguyen t6 hoa hoc co Z 24, a) Hay trinh bay chi tiet va ket qua viet cau hinh ~kctron cua nguyen tlr nguyen (('J (co dung luqng [\1), b) Dang don chat nguyen to co tfnh chat hoa hoc dien hlnh nilO? Tai sao',' Hay viet mot phuong trinh phan ling minh hoa tfnh chat do, c) 11m so h<,lI1gco ban cua nguyen [\1 va mot ion thuOng gap cua nguyen (l) nay, Cdu II = Ap Jung dong thai ca thuyet lien ket hoa tn (VB) Ian thuye'[ obitan phan (lr (~l() l hay giai thfl.:h sl.! hlnh thunh lien k~t hoa h\Jc moi phan tU sau Jay (el'> hlnh vc): I) N2; 2) CO2 (thue nghiem cho biet CO" la phein tv thing) CduIII 010 !T101 NzO~ vao m¢t binh dung tich 10 l roi dua nhi~t Jo len 45'lc lai Jay xay = can b~g NZ04(k) :;;=:: 2N02 U'ng vOi ap sU<ltP atm, a) X~c dinh d¢ phan tich cua N204 (k) va luqng moi chat llic can bang, b) Xac diM hang 56 can bang Kp, Kc Kx ~ 4SOC a c) Kill giam ap 5uat cua b~ xu6ng ffi¢t mIa thl d¢ phan tich mOi a' Iii baa nhieu ? Tinh luqng m6i chat Ket qua co phu hqp nguyen Ii chuyen dich can b~g khong? d) Phan U'ng dii cho co ~ = 72,800 kJ va duqc chap nh~ d<), Xic dinh Kp t~ 3S°C Ket qua co phu hqp nguyen bAng khong? VI sao? !chong d6i theo nhi¢! Ii chuyen dich can CdulV 010 cac c~p oxi ho<i khu clIng cac di~n the chuAn tlIC1Ilgling: Sn4+/SnE~ Sn +/Sn = 0,005 V E~ ~ - 0,140 V a) Tlnh di¢n the chutln E~ cua c~p oxi hoa khu Sn4+/Sn2T, b) Vai ket qua (a) hay chobiet Sn4+ co oxi hoa dUQc So de cho Sn2+ chuin !chong? Viet phan U'ng r6i t(nh 6G~~ cua phan ling_ a dieu ki~n xA Hor CHU NGHIA VI$T NAM DQc I~p - Tl! - H~nh phuc CONG HoA * - D~ THI TUYEN SINH SA U Di}.I HOC NAM 2005 TRUONG D~l HOC sU PH~M HA Nor MOll thi: CO Thai gian lam bai: so LY THUYET 180 phut ~'k\!\ c ';1 \7 or-) HoA HOC (kh6ng ki (hiri gian pluit dl) '\ Cao 1: Xet can bang N2 + 3Hz <=> 2NHj voi 6H" = -92,4kJ/mol trang khoang nhi~t d¢ xel Neu niter va hidro dLfQ'Cl<iy voi ILfQ'ngtheo dung ty l¢ hQ'p thuc thlluc can bang h6n hqp khl dLfOi ap suat P = 300atm, chCra 36% amoniac T = 450"C al Trnh hang" so can bang Kp a 450"C bl Muon h6n hQ'p can bang chCra SOCk amoniac van t';li nhi~t d¢ 4S0"C thi ap sU:lt toan ph~n la bao nhieu? ci T';li ap sU:lt c6 dinh P = 300atm, muon h6n hQ'p can bang chCra 50% amoniac thl nhi~t d¢ phai d,;lt toi la bao nhieu? Cau 2: Cho 0,0 al Trnh rang bl Biel oinh mol NaOH V21 0,0 J mol Este vao J Ifl nll0C (; 27"C hang so toe 0<) ph an Crng b0e hai n~IY \,:1 thai gian lllId phan l1ng biet 3/4 Este dii bj xa phong h6a sau gia rang tang nhi~t d<) loi 127°C, toc d¢ phan ling tang bon Ian Xac nang ILf<;mghOC;llh6a va thai gian nLra phan ung t<;li127llC J Cau 3: Cho hai c1i¢n CLJC: ZnS04 (0,01 M) I Zn E~ = -0,76 V HCl (0,001 M) I AgCl, Ag E~ = 0,222V Ohep hai di¢n cLJc d~ t':l0 m¢t pin di~n Hay viet cac phan ling di~n Cl!C va phan Crng tcing quat xay trang pin di~n roi tfnh sCrc dien d¢ng va c6ng di~n ma pin c6 kha nang sinh Khi d03n m':lch hai dau pin bang day dan Ihi chieu electron ehuy~n dieh the nao m':lch ngoai? a Cau 4: II a/ M~l nUlla gl? Hay cho biellen g9i, d~c diem, luqng tLrng IO(;li m~t nut doi voi m6i obitan nguyen tLr(AO) hi Oiti thiet di ehuyen LLr+Z den -Z qua g6e IQa d¢_ c6 bao nhieu Uln La g~p m~t nul xet moi AO sau: J s; ho~c 4p,; ho?c 5s biet rang c1¢ dai dO~tn di chuy~n du xa 2/ Hay thiet I~r slf li~Ilh¢ giO'a hang so Ritbe Rz h~ Ie, hi;lt nhan c6 so di¢n llch h~lt nhdn Z 3/ C6 h~\ll1 song: t.F = (2!)"'1211s ISI (1) 19 thuyel v0i thl!c nghi¢m cho ta a/ Ham s6ng d6 ma trl;ing thai nao CU3nguyen tLr?T?i sao? b/ Hay trlnh bay chi tiel qua tflnh thiet I~p dt thu dl1Qc (1) Cilu 5: I I Xet hoa Iri cua CI thea VB: a/ Hay ch'o bier so dan vi h611 rrl c6 Ih~ c6 (dn giai thfeh) bl Phan rfeh cang thuc h6a hoc d~ minh hQ3 tung trj so d6 2/ al l1We nghi¢m cho biet trang phan tLr HCHO, g6e HCO b~ng 122°, g6c HCH bang 116° Dung me hlnh VSEPR giai thleh ket qua d6 b/ Hay trlnh bay chi tiet va ket qua viet eang thue LEWIS, eho C1207 Lien kc"t CI-O-C1 trang phfm ILr e6 l';io m¢t dl1ang thang khang? T';li sao? 31 Lai gi •.ii phl1Cmgtrlnh Srodingo eho h¢ e-T( theo phlfong phap MO - Hucken thu dLfQChic'u thCrenang ILfQngcho h¢ etilen la E, (h~) gae allyl C 3H) la Ej = a - 0; E2 = a am; lal > 101 Hay tfnh: a/ Nang hi N,-lOg = a + 0; E2 = a - 0; va eho ; EJ = a + ILfQnggiai loa h~ e-T(d6 D';li ILfQngnay e6 Ilfang ion h6a thCrnh,'11cua h~ y 20; trang a, nghTa nao? deu · CONG HoA xA HOl CHU NGHlA YU;:T NAM D<)c I~p Tl! • H~nh pinlc * - Dtt THI TUVtN SINH SAU D~ HOC NAM 2004 TRlfONG D~ HOC Slf PHJ\M HA NOI Mon thi: CO SO LY THUYET HoA HOC Thili gian lam bai: 180 philt (kh6ng ke thili gian pluit de) N«)i dung thi (gom trang) de Cau I: Xet can bang cua philn Crng N20.j (K) <~> 2NO} (K), t~i nhi¢t T duai ap suit P a) Cho dc dfr ki~n nhi~t dqng sau: [K1lmol] 6H~1,2YX S~l)X [11K_moll 304,3 9,37 33,89 240.45 dieu Hay tfnh L1H~yx, L1S~yx va 6G~yX d6i v6i phan Ung d5 cho ki¢n chufrn (P = bar, T = 298 K) N204 co tl! phan tfch thilllh N02 khong? Tfnh hang 56 din bang Kp t~i 298 K b) Gill thiet trang khoang nhi¢t d¢ 298 - 318 K nhi¢t phim Ung khong phl;! thu¢c nhi~t d¢, hay tfnh hang s6 can bang Kp t(;li 318 K c) T';li P = I atm, g9i a la d¢ phan tfch cua N20q lhanh 0:02' hay thiet I~p moi quan h~ gifra Kp va a rCSttfnh a l';li 298 K va 318 K Ke't qua tfnh a o Iy hai nhi~t d¢ co phu hqp v6i nguyen Chatelier khong? chuy~n djch can bang Le d) Neu g9i M In kh6i luqng trung blnh cua I mol hon hqp khf luc can bang,_ hay chCrng to rang: 92-M [].= - M TiJ gia trj a a hai nhi~t d¢ tlm duqc a tren, hay xac d!nh Nt 6298 I X K Gici tri M nhi~t dO nao nh6 hon va t~i sao? Chu N=/4 o=/() C1u II: Xet phan t1ng trang dung dich a 25°C: 2Fe'+- + Sn2+- = 2Fe2~ + Sn +J a) D~ nghien Clru d¢ng h9C cua phan t1ng, tien hanh t~i nghi~m duoi day: Thf nghi~m C;e J+ [moIlI] 10-2 2 10-2 10-2 C;n 2+ [mQI/I] 10-2 Toe dO dau o V V 2.1 O·~ 8v 10-2 4v Xac djnh b4c rieng d6i v6i tung chert, b~c wiln phan cl6i v6i phan ung va viet phLIong trlnh d¢ng h9c cua phan t.'mg dJ cho K va b) Hay chltnr1 to pi) n t1ng tr~n la phan t1ng 6xi hoa khv r6i t[nh hilng so can bang bie't cae [he chutln EO '+ Fe Sn -1+ "+ = 0, 15V / Sn- N~u phan t'mg di.'iche xtiy pin c1i¢n, hily vic'[ so d6 pin di~n, cho C) bier chieu dong di~n C~lU "+ = 0,77V; E~ / Fe - a rn~ch ngoai do,in rn'.lch hai duu pin di~n III: I Hay ph;it bi~u n<)i dung nguyen Iy phim d6i xCrng va ap dl;lng nguyen Iy d6 tlm ham s6ng mo ta tr:;tng thai C(J ban cua Li+ (c6 trlnh bay chi tiet) Cho nguyen to hoa hQc c6 Z,= 27, hay trlnh bay: a) Chi tiet va ket qua viet cau hlnh e cLla nguyen tv (co dung luqng tu) b) Tlnh chat hoa hQc di~n hlnh d<;1ngdan chat c~a nguyen to' c) Vi hat co 56 oxihoa nao (ion) b~n nhat cua nguyen to? d) 11m so' h,:mg co ban eua nguyen tLrva ion b~n nhflt ') a) Ap dl}ng h~ thvc En::: -13,6 Z; (thee eV), hay t[nh de tr! n[lng luqng n E.1 thea eV, dem vi nguyen tV, kJ/rnoJd6i v6'i C5+ b) Co quy lu~t nao lien h¢ dc tr! En v6'i n? (n la s61vqng tiJ chlnh) Quy lu~t phan anh quan h¢ nao v~ cflu tl;lo nguyen tiJ? E1, ~ Cau IV: I Thl!e nghi~m cho biet d<) dai lien ket d (theo A.) cua so' pha.n tv: Phan tLr H2 O2 N2 HCl CO HF d 1,2070 1,0940 °1417 0,9171 1,257' I, 128 Co dan chat thu<)c nhorn A V~l3~an chat thu<)c nh6m B Ciic tri s6 d ehva duqc d~L dung eho moi ph~m tLrtrang m6i nhom Hay d~t dung tr! so d(:>d~li lien ket d cho ph{tn tLrtuong Un.gva neu r6 Iy cLJaSt! sap x~'p naY'1 Hay viet c6ng thilc cau t<;1oLewis va ap dl;lng mo hlnh VSEPR, chi r6 hlnh dang cua SF6 J) b) Ap dl;lng Iy thuyet MO, hay giai thleh ket qua thl!c nghi~m O2 thli~n LV N;lm !949 Kuhn cia phat hi¢n btmg thl!c nghi¢m ph6 cua Buta - 1,3 dien c6 v(;lch hap thl;! (; cI¢ dai s6ng A ~ 220,0 nm A.p dl;lng mo hlnh h<;ltchuytin d<)ng tl! h¢p the hlnh chv nh~t m¢t chieu, hay tlnh d~ X3c nh~n ket qua tht!C nghi~m d6 Cho m, ::=9.1 1.10·.11 kg: C z3.1Q"I m/s: h z6,626.10·.I./ 1.5: d z 144,5 pm ~~ LLw tAl CQNG HoA XA HQI CHU NGHIA V~T NAM f/\o/> 20(')}0) D<)cI~p - I'll - H~nh phuc ~ D~ THI TUY~N SINH SAU DN HQC NAM 2003 TRV<JNG DAI HOC SVPHAM HA Nor Man thi: Thai gian lam bai: Co sa If thuyet hoa hqc 180 phut (khong kl thili gian pha( de') (De thi g6m trang, thi sinh kh6ng du<!c su dl~.ngtiU Jifu) N9i dung de thi Cau SI! thuy phan m<!teste moi tIl1ang bem 25°C xay fa theo phuong trlnr pl,l;~n,I1ng: RCOOR' + NaOH ~ RCOONa + R'OH thl!c nghi~mcho thay t6c d<! phan t!ng tang gap d6i nong d(> bem tang len l<in.D6i voi sl! tang gap doi nong d9 este cling thu dlICJCket qua nhlI v~y a) Cho biet b~c fieng phan d6i voi moi chat va b~c toan ph<in cua phan , • -.1 b) Tan 0,01 mol xut va 0,01 mol este vao 1ft nlIoc (bO qua 51! thay d6i th~ tfeh pha ehe) Sau 200 philt co 60% este bi thuy phan TInh: Hang s6 t6e d9 ph~m (mg, thai gian ntra phan {mg va nang luc;mg hO<;it hoa cua phan (mg Biet rang, h~ s6 nhi~t d(>cua h~ng s6 t6c d(>bang Cau din cua qua _ T'.ii 300K, dWJi ap suat atm, phan ang N204(k) ~ 2N02 co hang s6 bang Kp = 1,66.10a) Tfnh ph an tram phan Ii cua N204 b) Tfnh phan tram phan Ii cua N204 ap suat tang t6i 10 atm Ket qua co phu hqp voi nguyen 19 chuyen d~ch can bang khong? Ly giai c) tOng voi c:lieu ki~n ve nhi¢t d(> va ap sw'ft nhu (; (a), luqng ban dau N204 la n mol, cua N2 Ii) n mol thi ph~n tram phan Ii Iff baa nhieu? V6i ket nay, so voi (a) co th~ ket lu~n gl v~ nguyen 19 chuy~n dich can b~ng? Cau Tr(m m¢t mol FeS04 voi m9t mol CuS04 m¢t 1ft nuoc v6'i 51!c6 m~l cua sat va dong a) Co hi~n tl1qng gl xay ra? b) T[nh nong d9 Fe2+ va Cu2+ can bang c1uqc thiet l~p a 25°C Cho: Cftu (poF~2+ /F~ = - O,44V; <p°cu2+/Cu ~ = O,34V A Huy trluh bay chi liel 'Ill ke't qua l£n11solugng AO, ASO cho trvO'ng hqp so II1(,1nglLrchfnh n = 3; ghi day du k1 hi¢u (theo to~ JQ Decae, neu can) cho m6i ham d6 B Dl!a vao vi¢c tinh nang II1CJngdeclwn cua nguyen ttr Ie va nhieu e (thea phuong phap Slater), hay trinh bay chi tiet ket qua tfnh nang luqng ion hoa II' 12,13 cho Li (lheo eV) C 1- Hay trlnh bay cac co 50 va ket qua viet cffu hlnh electron tLr c6 Z = 31 2- C6 s6 h~ng co ban cila nguy~n ttr : a) (co Ul;! 3po; b) SI/2' cho nguyen Hay cho biet giai thfch) cau hlnh electron vo hoa tr1 cila m6i nguyen ill va neu m¢t VI minh hoa tfnh chat hoa hQc co ban cila nguyen ill Cau s A Hay viet cau t~o Lewis cho po; va dung mll hlnh VSEPR xac djnb hlnh d~ng cua ion d6 B Ap ch;Ing dong thai thuyet VB va MO giai thfch lien ket hoa hQc trang: 1) N2; 2) H20 (co ve hlnh) C C6 h~ octa(etraen Hay ap dyng mo hlnh h~t chuyen dQng tv (rang hOp the hlnh chfr nh~t m¢t chi~u, tfnh: 1) Cae muc nang IUQ'ng En (theo J) cila h¢ 2) Nang h.rqng to~m b<? e - 1t cua h~ (theo kJ mol-I) 3) 56 s6ng v~ch hap thy sV chuy~n dai HOMO ~ LUMO (theo cm-I) Cho: h = 6,625.10-~J.s; me = 9,l.10-31kg; d ~ 1,4.10-1om; N.,\ = 6,022.10:n CQNG HoA xi\ HOI CHU NGH1A DOC L~P ~ n; DO -HANH vrtT NAM PHUC ,.' DE THI TUYEN SfNH SAU DAr HQC 2003 TRUONG DAI HQC SUPHAM HA N(n Call I : '\ A Hay tinh s6 luqng AO ,ASO cho truong hqp s61uqng tu chinh n = va gbi d:ly du ky hi~u (theo to<;td9 Decac, neu can ; kb6ng xet chi tiet AO clla moi ham d6 B Dl!a van vi~c tinh nang luqng electron cua nguyen tlr Ie, nhieu e, hay trlnh bay chi tiet vi~c t[nh va ket qua nang luqng ion boa tU I] den 15 cho B (Z = 5).~ -t- V C Xet nguyen tlr c6 Z = 32: hay trlnh bay chi tiet cac co cua vi~c viet 'cau hlnh electron va ket qua cau hlnh d6 cua nguyen ttr Co s6 hC;lngco bim'cua nguyen tlr: a, 2P312 : b, -lFI)/2 Hay cho biet cau hlnh electron vo hoa tri cua moi nguyen ttr d6 va neu m0t vi dl;! phan ling Hoa hQc minh ho~ tfnh chat chu ye"u elJa nguyen ttr Cdu 2: A Hay viet diu t<;toLewis va dung m6 hlnh VSEPR de cho hiet hlnh d<;tngcua ion n sa SO/ Ap B d\lng dong thai thuyet VB, thuyet MO giai thich lien ket Hoc\ hQc trong: 0" CH-I C lrng dyng m6 hlnh hC;ltchuyen o¢ng chieu, hay tinh: I, cac tli nang IUQ'ng En theo J 2, Nang IUQ'ngh¢ e-7! theo kJ moJo] 3, SO s6ng V theo cm Cho h¢ dodecahexaen (~ -I tv h¢p the hlnh chfi nb~t m9t v(;lch hap thl;! cua Sl! chuy~n ooi HOMO len LUMO ) Cdu 3: Khi NOCI bj ph an huy theo phein lIng NOel;? NO + C12" Ban chiu chi c6 NOCI Khi can btmg duQ'c thiet l?p t(;li500K thl co 27% NOO bj phan huy; ap suat chung cua he Ia atm" Hay tfnh a SOaK: I, Kp va GO cua phan tIng ; 2, Ap suat rieng phan tUng chat luc can bang Khi ap su~t cua h~ h';1xuong dv6'i atm thl sl! phan huy NOCI tang hay giam? Vlsao? Cdu 4: D~ khiw sat can btmg a 250c Cu2+ + 2Fe2+ Cu + 2Fe 3+;? CuS04 0,5 tvl; FeSo4 0,025 M ; Ngvai ta chujn b! m¢t dung dich gom Fez (504)3 0,125M roi them vao m¢t ft Cu 1, Hay cho biet chi~u dien bien cua phan lIng 2, Tfnh hang s6 can bang cua phan Ilng 3, V6'i ti l¢ nao cua [Fe3+J / [Fe2-j thl phan lIng d6i chi~u? Cdu 5: a Phan ling phan huy axeton 3000<: xay theo sa : CH3 CoCH3 >- CH4 + CO + H,_ Nong d¢ cua axeton thay d6i theo thai gian nhv sau: t (phut) 6,5 13,0 19,9 C (mol.L -1) 8,31 7,04 5,97 4,93 1, Hay chUng to d6 la ph an tIng b?c nhat, tfnh hang s(> toc d¢ pharr Ung 2, Tfnh thOi gian ntra phan U'ng 3, 343°c hang s6 t6c d¢ phan Ung bang 2,15 ph-I Hay tfnh h~ 56 nhi~t d¢ y va nang luqng ho~t hoa E Cho bic't y nghia cua nang lUQng hoat boa d6 Cha me = 9,1 10-31 kg; h = 6,625.10-3415 d = l,4.HY'O m c = cpo 3.10Rm.s-l; N=6,022.1023 = 0,34 V ; cpo ~uLt/ eu NGUOI RA DE THI CONG HoA xA HOI CHU NGH1A VI£T NAM D¢c lt~p - Tl! - H~nh phuc * - DE THI TUYEN SINH SAU D;\I HQC 2002 TRUONG DAI HOC SU PH~M HA NOI Mon thi: HoA Li THUYET VA HoA Li Thai gian Lam bai: 180 phut (kh6ng ke theJigian poat de) N(>i dung de thi: (g6m trang) I, Hay Lrlnh bay chi tiet va keL qua Lfnh nang luang ion haa thv nhat, thv hai, Lhv hd CLICl [,j (lhc() c V) 2, C') s6 h4ng nguycn Lveo ban la ~ F lJ/2 h, BiiYl rang nguycn [6 U) Vl) Lren et') Lh~ la m()[ Lrang cac nguyen to co Z = 72 hmic 77 hoac C)() Hay viC"LdIu hlnh elecLron day du cua nguyen ttf I \ Hay Lrlnh bay chi lic'L LLrvi~c 14P h¢ phLIt1ngLrinh the ky, ap dung sl! gan dung Hucken, giai cae phuong tdnh deS, troh de Lham so Hoa hoc lUQ'ng ttr va bi~u Jicn Lren so d6 phan LVpi cho Buta - I J - dien 2, Ap Jyng ca,thuyeL VB va MO giai Lhfch lien keL Hoil hQc Lrang CO2 NgU'l1i Lach() I mol C (r), I mol CO2 (k), mol H2 (k) elm kh{')ng et') th~ Lfch 22,4 Ifl Gia LhieL cae phein (rng cung xay V~lO blnh chan I Tfnh lhanh rh~n he Ide can hang K~t qua c6 <; nghla gl Khi d~t t(1i dn ve phan trng hoa b~ng hoa hQc c6 IO~lj het dV9c C (dn) khong? 1)i sao? ) Tfnh A GU cua m6i ph~m ling, y nghla Co m¢l di~n CLICbac phl! Ag2S Cho T cua trf s6 tinh dVQc? Ag2S = 10 ·49 ; EO Ag+ lAg = O,8V I, Hay chtIng to dien cLICnay lam chi thj cho n6ng d¢ S2 Trnh the' cua uicn cLIe nong de) 52 la lo·4M M()t dung dich nlI<lc hao hoa Bi2S\ c6 PH = 6,0 The cua di~n cl!c tren trang Jung dieh la - 0, I ~ V Tfnh tfch so Lan CUd Bi2~' Gia lhiet 52 dung u!ch chi uLIVe l';iO tLr Bi}SJ Cho H25 co PK, = 7,0: PK2 = 14,0 Tai th('ri di~m khao sat ap SUal rieng ph~n cua Nl05 2, Tfnh l6e un tieu thy N20), hlnh thalJh NOll O2 phan Crng lren ULIve viet 13 N,O, (k) -~ ~ NC:u - dVQc la 0,5 atm ' NO, - (k) + -210 (k) Hang s6 toe k, toe d¢ phan Crng V e6 thay dOi khong \ u·cn"t Tai ? Gia thiet phan ling xay t~i 2SOC va khong doi so v6i tn10ng hQp 'J ; "'''' r CAA CONG HOP xA HOl CHU NGHlA vItr Doc I~p - Tu - Hanh phuc tA,,,, ~ , NAM * - DE: THI TUYEN SINH SA U DA.I HOC 2002 TRUONG DAr HOC SU PRAM HA NOI Mon thi: COSOLYTHUYETHOAHOC 180 phut Thai gian lam bai: de thi: N9i dung (kh6ng ke thili gian ph(u de) (de" bdi g6'm (rang) Cau Tienhanh thr nghi?m sau: "\ a) Cho mol PCls VaGm~t blnh da rut bo kh6ng kill, th~ tfch la V Dua nhi~t d<jcua blnh len 525K, din bang PCls(K) ~ PCl)(K) + O2 dU9C thiet l~piv6i hang so can bang Kp = 1,85 atm Ap suflt blnh dU9c bang atm Tfnh so mol cua tungch:it h6n hqp can bang b) Cho I mol PCls va I mol AI vao blnh nhu chi nghi~m (a) r6i dua nhi~t d<ilen S2SK d~ can b~ng phan ling dU9c thiet l~p Tfnh s6 mol cila POs, PO) va O2 luc din bang Nguyen 19 chuy~n d~ch can bang Le Chatelier c6 vai tro gi a day a khong'7 Vi baa? c) L~p lq.i thi nghi~m (b) Khi ca.n bang duQ'c thiet l~p, gifr nguyen nhi~t d¢ 525K d6ng thai tang th~ uch cua blnh len d~ keo lip sual tro ve atm Tfnh so molluc can bang cua PCls, PCl) va 02' Nguyen 19 chuy~n dtch can bang Le 'Chatelier c6 d6ng vai tro gl trlJemg hqp kh6ng? Vl sao? Call Khi c6 m~t cila axit HCllam xdc tac, phan ling iot hoa axet6n CH)COCH) + 12 C6 phuong trlnh t6c d¢: dCA v = - dt CA va C H + CH}COCH) + HI H") = k,C A 'Cw (l ) la n6ng axet6n va axit tal thai di~m t a) Hay giai thfch phuong trinh t6c d~ phan (mg bang co che phan ling b) 625°C h[ngs6 t6c d~ phan.(mg b[ng 2,01.10 3tv'1-1ph oJ 1mh n6ng d¢ c~= 0,1034M; axeton tq.ithai diem t = 60 phut, biet n6ng d<id~u cila axeton cua axit va cua iot bang CO H + Bieu thue hang so toc d~ k = n6ng = CO = 0,1M 12 ° .° t( C A + C w) C~(C~~' + x) in (2) C w (C A - x) X la n6ng dQ axeton da chuy~n hoa sau thai gian t c) H¢ 86 nhi~t d¢ cua phan Crng iOt hoa ax8ton bang 2,5 Tfnh nang luqng hoq.t hoa cila phan ling (tfnh thee don v~ SI) (j) Cau 1) Cho s6 h,:lng co ban cua nguyen tt'rIa D9n a) Cho bi~t ct,l tht c~u hinh e - U'ngv6i so h~g tren Ca'u hlnh c6 phai 1a cflu hinh e' vo hoa tri khdng? T<;lisao? b) Trang 56 cac nguyen t6 v6iZ = 26; ho~c 43; ho~c 57, nguyen t6 nao c6 56 hang d6 T':li sao? 2) tinh s61u~g, viet ky hi~u AO, ASO ling v6i n = 3) a) Tinh tri s6 nang 1uqng E1, Ez, ~ theo d eV va dvn cho He+ b) Neu va giai thich quy lu~t lienh~ gifra En v6i n c) G:6 hay kh6ng, 5Vlienh~ gifra tri s6 nang luqng tinh duqc tren v6i nang 1uqng ion boa cua ~~? Giai thich cl;ltht "\ Cau 1) Viet cdng thlic Lewis va dung mo hlnh VSEPR d~ xac dinh runh d~g cua NO ~ (chu Y trinh bay chi tiet va c6 ve hinh) 2) Rb (M = 85,47) 13.kim lo';li c6 m~g tinh th~ l~p phuong tam kh6i, bin kinh nguyen tu r = 2,48 A Trinh bay chi tiet va ket qua tinh kh6i luqng rieng (theo g/cm3) cua Rb 3) Ap dt,lng d6ng thm thuy~t VB,thuyet MO, hay giai thich lien ket hoa h<;>c a) N2 b) CH4 (chu <; trlnh bay chi tiet va co ve hmh) a BQ GlAo Dl,JC vA DAo T.:\O TROONG DfU HQC SUPFIAM HA NQI w DE THI ~N C¢NG HOA xA HQI CHU NGHIA VItr NAM D¢c l~p - Tl! - H(~mhphuc * CAO HQC KHoA 11 ( dqt2 , thang nam 2001 ) M6n thi : Co If thuyet Hoa hQCva au t?0 chat Thai gian lam bai : 180 phut ,khong k~ phat de ; khong duqc dUng tai li~u Call I 1) Tr¢n lit dung dich axit axe tic 2M voi 1ftdung dich etanol 3M Tinh t6c d¢ hlnh etyl axetat t<;1ithai di~m cO m¢t nva Itrc;mgaxit da ph{m ling Chap nh~n phan ling d6 la b~c nhat doi voi moi chat ,c6 h<ings6 t6c d¢ b~ng 1,38.10-2 M-1.ph·l t';1i398K 2) Tinh thai gian d~ axit axe tic phan ling duqc 90% 3) Tinh wing luqng hO<;1t hoa cua phan ling , biet rling h~ s6 nhi~t d¢ cua t6c d¢ phan ling bAng 2,5 Call II Cho ca.c c~p oxi h6a khv va c:ic th~ tieu chuful tuong ling : 12/1E01 = 0,62 V; 13/1E02= 0,54 V; 103- / 12 E03 = 1,19 V ~i pH = 1) Viet prim ling va phuong trillh Nernst tU0ng ling d6i voi moi c~p oxi h6a khv 2) Tfnh th~ tieu chuan E04 d6i v6i c~p oxi h6a khir 103-/13) Trnh h~ng s6 can bang cua pluin ung 13 ~ 12 + I" 4) Chling to dng 103- oxi hoa duqc 1- Hay viet phuong trlnh phan U"ng Call III 1) Obitan nguyen t11 ( AO ) 1agl ? C6 nhO'ng 10<;liAO nao dii dvqc xet trang giao trinh vu'a dvqc nghien CtIu ?Hiiy cho bier lien h~ c6 the c6 gifra cac lo~i AO d6 (Khi trlnh bay,c6 neu vi dl;!minh hO<;1 ).Hay tfnh s6luqng, viet ki hi~u AO ,ASO ( obitan spin) s6 ll1qng tir chtnh n ::::3 2) Xet nguyen t6 Hoa hQc c6 Z =26 : a Trlnh bay chi tiet vi~c viet cau hinh electron va ket qua c~{uhlnh d6 cho nguyen ticva ion thuang gi;1p sa d';1ngdon chat ,nguyen t6 d6 la kim 10<;1i hay phi kim ? Hay neu VI dl} min.h ho';1va giai thfch c Trinh bay chi tiet vi~c tfnh va ket qua tfnh duqc s6 h';lng co ban cua nguyen tic va ion thuang gi;1p Call IV 1) Hay viet cong thuc Lewis va dung mo hillh VSEPR cha biet hlnh d';lllg cua 50/ 2) A.p_dl}ngthuyet VB va MO giai thIch len ket Hoa hQc trang : a CO b H20 b CQNG HOA xA H(H CHU NGHIA \ ~T NAM D(>c l~p - Tlf - Hanh phllC • Dt THI TUYEN SINH SAU DA.I HOC 2001 TRUONG DA.I HOC SU PH AM HA NOI sa M6n thi : Co Ii thuyet hoa hQc va cau t<;1ochat Thai gian lam bai thi : 180 phut ( khong k~ thai gian phat d~ ) N6i dung thi : de Cau I a 300K va duoi ap suat bar, 20% N:! 04 bi phan Ii thilnh NO:! theo phan ling N204 (k) = 2N02(k) Tinh hAng s6 c~n b~ng Kp va 6GO cua phall lIng nbi~t d$ da cho T~i 300K , LillO cua phan (rng bang 57,20 kJ va k.hong phI;!thu¢c vao nhi~t d<) Tinh h~ng so din b~ng cua phim t1'ngt~i 400K Ket qua tfnh dvqc c6 phil hqp voi nguy~n Ii Le Chatclicr khong ? Hay giai thfch Tfnh % eua m6i khf h6n hqp e~n b~ng ~i 400K Tinh 6~ eua phim ung 0400K Hay eho biet y nghla v~t If eua tr! s6 tinh dvqc Cau II: Phan ling HCHO + H202 ~ HCOOH + H~O c6 b~c d<)ngh9C b~ng Neu tr<)ncae th~ tich b~ng cua dung d!ch H20] va HCl-:IOcling n6rlg d<) M 0333,2K thl sau gia nong 0<)axit fomic bang 0,215 mol /1 Tinh hang s6 t6c d<)phan u-ng N~u tr<)nm¢t th~ tich dung dtch HCHO vOi2 th~ uch dung dtch H202 co cong nong d¢ M tq.inhi~t d¢ tren thi sau bao Iiiu HCHO phan 6ng het 90% ? D~ xac dinh nang luqng hO';lthoa cua phan 6ng da cho , ngvoqlri ta lie'n hanh thf nghi~m nhu , tq.i 343,2K sau 1,33 gio nong d¢ HCHO glam m<)tll\la Hay tinh nang luqng ho~t hoa clla phan ling theo kJ / mol a Cau III: a) Hay tinh s6luqng AO , ASO va viet kf hi~u m6i ham theo s61uqng ill n ,1,m ' truOng hqp nao dn thl them s6 luqng ttr m I 6ng voi n = (khong xet chi tiet AO - f) b) Nang luqng electron AO muc n dU<;1c tfnh : - tlr 10i giai phuong tr1nh Sroc1inga En = -rnZ e: / 2nn :! ( 1) - tir S1/ gan dung Slater En:;:; - ill (Z - (J):! eo /2nt1 (2 ) Trong d6 , cae d~i lU9ng khac du biet , CJ OJ Iii d~j lVQl1g dt1qc dung ~~ d€n llfc da'y gifra 2e AO a = Dung cac bitiu th(rc , xac dtnh nang IIfO'ng ion hoa th(r ba ( 13) , th(r hai ( 12 ) cua nguy~n t61iti K~t qua tfnh theo bi~u th(rc nao phil h<;:1p vai ket qua thlfc nghi¢m hon ? T~i ? Cho nguy~n t6 hoa hQc co Z = 29 : a) Trlnh bay cO' so vi~t c~u hlnh electron va ket qua cuatn10ng h<;:1p b) Tinh s6 h~ng cO' bim cua nguyen tlr va ion 2+ c ) Hay cho biet tfnh ch~t hoa hQc cua moi vi h~t vtra xet , giai thich va neu dgn ch(rngminh ho~ Cau IV: Hay trlnh bay chi tiet va ker qua vier c6ng t1mc cau t~o Lewis cua a 50/ b NH3 '\ Ap dung mC>hlnh VSEPR , hay cho bier hlnh d~g moi h~ tren ( co giai thfch chi tiet ) Tetradekahepta - ,3.5, ,9 , 11 , 13 - en , C14H16 , 130h~ lien hqp , phAng m~ch ho A P dyng bi~u th(rc tfnh nang lLfqng h';1tchuy~n d¢ng tv h¢p the chfr nh~t chi~u , hay tfnh : a) m6i tri nang lLfqng En cua h~ theo J ; b) c) nang lLf9ng h~ e-n vi tri ( theo s6 song, theo kJ v cm I mol; -I ) cua v~ch ph6 Ie - TC HOMO len LUMO Cho d=1,4A;m = 9,1.10-3Ikg;h = 6,625.1O-YiJ.s; ( / c = 3.108 m/s ~-tV:: 11 GoL ~o-I? chuy~n dai tlr J Ap dyng thufet MO giai thich lien k~t ho£1hQc moi h~ sau : a) NO+ b) CH4 Ohi chu: I NgLfoi coi thi khc>ng ph~i giai thich them NOWI RA DE THI Lk.~~ [{nv CD y~ BE THI TUYEN SINH BAo T~O SAU B~I H9C T~I cAc Cd Sd NUdC NGoAI BANG NGAN SACH NHA NlfOC NAM 2001 M6N THI : Co s6 If thuy~t hoa h9C va cau t?O chat Thai gian lam bai : 180 phut Cdu 1: MQt cha't n6ng ch<iy(nc) t<;Ii150 K , nhi~t dung trung binh theo J.mol -IK-1 nhLCsau : Cp (r) 1,672.10 Cp (r) -4 T3 20,09 < T 50 T 150 < T lillo nc trung blnh la 1250,0 J.mol-l tfnh entrapi cua cha't d6 a tr<;Ingthai long t;;ti 300 K Cp (I) Hay 25,08 < < < 50 K 150 K "\ 400 K Hay tinh ~G cua qua trlnh n6ng chay chat d6 t;;ti 100 K T;;ti d;;ti ltrqng c6 dau nhv v~y? Cdu : I Thea d6i tIi s6 ap su~t chung, Ph¢ • theo thai gian cua phan Vng AsH3(k) ~ As(r) + 3Hlk) thu dvqc soli~u sau day: t ,gia 4,33 16,0 25,0 37,66 44,75 Pht ,cm 39,2 40,3 43,65 45,35 48,05 48,85 Hay xac djnh b~c va hrmg s6 toe d¢ phan (rmg d6 II Dung djch c6 nong dQ dau Tl+ 0,20 M va HCl 1,0 M dLCqcd~ trang kh6ng khf ~i 25°C ap sua't chung atm toi IUc Tl+ kh6ng tiep tl!c bj oxi hoa nfra Hay tfnh ti !~ph~ tram Tl+ chva bj oxi hoa Biet kh6ng khf c6 20% th~ tfch la oxi E°,.,3-t- IT\;:- )~Q.5"'; Cau 3:· EOn Hot/ ~z.1 I 1) Hay thiet l~p bi~u nang lve;mg h~ e h;;tt nhan RH : 2) Taj saa tIi so RH II ) ~o ~ 0J1~~ "" thuc tInh h~ng s6 Ritbe cua hidra , RH ,m bi~u thuc tinh giai phLCang trlnh Srodinga Hay cho biet dan vi cua a T6ng quat ; b Trang h~ SI tfnh nhu tren khac vaf lli so thu duqc tlr thl!c nghi~m ? Cho nguyen t6 haa h9C c6 s6 dan vj di~n tfch h;;tt nhan Z = 24 1) Hay neu co d~ viet ca'u hlnh electron va ca'u hinh cua nguyen tlr 2) Hay cho biet tfnh chat hoa h9C d,;lllg don chat cua nguyen t6,dfuJ chUng m9t VI dl;! va giai thIch t<;Iisao co tfnh cha't 3) TrInh bay chi tiet va ket qua viet s6 h~ng co ban cua nguyen tlr , ion co di~n sa tfeh 2+ ,3+ cua nguyen l6 lren " fdU4~ethe (~V GJ HeW: 1) Theo q~an di~m thuy€t MO h~ co t6n t~i hay kh6ng? Hay giai thich 2)Khi HeH+ bj phan tich , nhiIng truC1ng hqp nao co th~ xily ? H~ nao 1:in,t~i saG ? II 5V tinh MO Hucken cho k€t qua sau day d6i v6i h~ e-n; cua Butadien : c1 Ham s6ng c2 Nang luc;mg c3 c4 0,6015 -0,3717 -0,3717 0,6015 a 1,618~ 0,3717 - 0,6015 0,6015 - 0,3717 a + 0,618 ~ 0,6015 0,3717 -0,3717 -0,6015 a + 1,618~ 0,3717 0,6015 0,6015 0,3717 a - 0,618 ~ \ Trang 56 Ii~u tren chua co sl! tuong (mg dung giiIa nang luc;mg v6i ham song va cling chua c6 thu tv tlr th~p len cao cua nang lugng 1) Hay tinh chI 56 hoa trj tv Fr va dungs6 li~u d6 giai thich ket qua phan (mg c(>ng rheo tl l~ mol 1: gi fra Butadien v6i Bram ; 2) Hay thi€t l~p bi~u thuc t(nh nang IU<;1ngh~ e-n; cua pha.n tU theo a , ~ 3) Hay thi€t l~p bi~u thuc t(nh 56 s6ng "{ ( m -I ) theo a , ~ Ie chuy~n dm tlr HOMO (MO bi chi€m cao nh~t ) len LUMO ( MO tr6ng thap nhat ) Cho Ohi chu: h = 6,625.10 -34 J.s ; c = 3.108 m/s Nguai coi thi kh6ng phai giai thfch them Nguai fa ;;*X~· ;:f.E .~.:;.'- .~~«: > d~ thi : ~~ cL ~~ !JIll//'/ ~ CONG HoA xA HOI CHU NGHlA V$T NAM DQc l~p' - Tl{ - H~nh phuc ;t, A' DE THI TUYEN V AO SAU DAT HOC NAM 2000 TRuONG DAr HOC SUPHAM HA N(n sa M6n thi : Ca Ii thuyet hoa hQc va cau U;lo chat Thai gian : 180 phut , kh6ng ke th61 gian phat de thi N¢i dung de thi : C~u I: \ 1) Hay chLIngminli rang: d6i v6i ngLl~ duqc tmh theo bieu thuc tLr hidro , 56 song cua vC;lchph6 l"=RH(~-~) Trang d6 h~ng ,6 Ritbe RH t (1) 1: u = - u~mC ~ v (2) a 2) Hai AO ~ 100 ~1a 2~) gi6ng va khac di~m nao ? Hay xet Cl;l the vai hidro thee dan vi nguyen tir 3) S6 h',mg co b~m 2P7(2 tuong Crngvai cau hlnh electron nao ? Hay giai thich chi tiet Olu II : 1) Hay trlnh ba chi tiet vi~c viet c6ng thuc cau ~o Lewfs (Liuyxo) va cho biet hlnh d~ng cua S03 theo thu yet VSEPR 2) Ap d~mg ket qua bai t9an h~t chuyen d¢ng h! h¢p the hlnh chfr nh~t m¢t chieu , hay tinhh:: nang lw;mg h~ e- 11 decapentaen theo kllmol 3) Hay ap d~mg thuyet MO gi<'lithich lien ket hoa h9C CO Cau ITI: / 010 the tieu chu~n EOclla c~p N03' /N02 la 0,94 v ; N02' /NO la 1,00 V ; NO'3 /N21a 1,22 V; NiNH\ la 0,27 v ; hay tmh thetieu chuan EO t<;ii pH =0 clh m6i c~p sau day: NO-JNO ; NO'JNH/ 'Cau IV: Xet phan Crng pha hoi (; nhi~r d¢ T duai ap suat atm N204.• • N0 Gd thiet cac d~u la If tuOng , hay: 1) Bieu th! hang s6 c~n bang Kp duai d•.mg ffi¢t ham cua d¢ phfu1tich d va ap sutlt chung P 2) Tinh cac h~ng s6 c~n bAng Kp ,Kc va nang h1'Q'l1g tlf elwin L10° tai T = 333 K; ri = 0,525, ) T<:ti 373 K li~ngo56 can bang Kp b~ng 14,97 ; hay tfnh H va S cLlaphan ung (; 333 K " fdU4 (~V GJ ~ethe HeW: 1) Theo q~an di~m thuyet MO h~ co t6n t~i hay kh6ng? Hay giai thfch 2)Khi HeH+ bi phan tfeh , nhfrng tfUCmg hqp nao co th~ xay ? H~ nao ~n,t~i Ham s6ng cl 0,6015 0,3717 0,6015 0,3717 c2 -0,3717 - 0,6015 0,3717 0,6015 san ? Nang luqng c3 -0,3717 0,6015 - 0,3717 0,6015 c4 0,6015 - 0,3717 - 0,6015 0,3717 a a a a 1,618f3 + 0,618 f3 + 1,618 f3 - 0,618 f3 \ Trang s61i~u tren chua c6 sl! tuong Ung dung gifra nang luqng vai ham song va ding chua c6 thu tl! tiJ thifp len cao cua nang luqng 1) Hay tfnh chi s6 hoa tfi tv Fr va dungs6 li~u d6 giai thfch ket qua phan Ung c¢ng theo ti l~ mol 1: gifra Butadien vai Brom ; 2) Hay thiet l~p bi~u thuc rfnh nang luqng h~ e-TC cua phful tU rhea a , ~ 3) Hay thiet l~p bi~u thuc tfnh s6 s6ng -::[ ( m -[ ) theo a , ~ Ie chuy~n dOi tiI HOMO (MO bi chiem cao nhift ) len LUMO ( MO tr6ng thap nhift ) Cho h = 6,625 10 -34 1.s ; c = 3.108 m/s Ghi chu: Nguoi coi thi kh6ng phai giai thfch them Nguoi d~ thi : Cilll v Sv philn hlly etan a nhi~t d¢ cao ~H6 xa'y theo phuong trlnh ~H4 + Hz va tuftn thea phuong trinh d¢ng hQc ffi¢t chi6u b~c nha:t 1) T<;ti507°C thai gian nth phan ling la 3000 giay Kill etan phan huy het , ap Sllil'ttcan ph~n cua h~ bang 1000 mmHg Hay tlnh hang s6 t6c d9 pharr ling a nhi~t d¢ tr~n va ap suil't d~ll cua e~ 2) Khi tang nhi~t d$ cua h~ phan lin?}en 20° , t6c d9 pharr Ung tang gAp d6i Hay tlnh thai gian nua phan ling a nhi~t d¢ va nang luqng ho<;ttd¢ng haa cua philO Ung ~1 ~ et.a ~ .!, ::H?:r;~ ,::::}>', i) 1.~o?j~ ')~:;;b ,'1-5- 4D J.4; d:: 1/ t-1 ci14f~) N,~,.o~.•~ DA-I HOC THI ~N MOll co Qu6c GIA HA NOI SINH SAU D~ HQC NAM 1999 sa II thuytit boa hoc va Call tao chat, de thi s6 cau I: Cho Chat CO2(k) H20(k) COck) ~G298(kcaVmol ) Tfnh ~G ° cua pharr ling -93,4 -54,63 -32,78 ~(k) = + CO2(k) COck) + H20(k) a 25° a 25°C N€u b~g 10,00; ap suat rieng phful cua H2, CO2, H20 va co wong ling \ 20,00; 0,020 va 0,010 atm till nO cua phein ling bang bao nhieu? Trang dieu ki¢n phein ling xeiy theo chieu nao? cau II : Nguai ta cho NO va Br2 co ap su~ftban dAu torr pharr ling v6i a 300 Wang ling b~g 98,4 va 41,3 K.Luc dill b~g ap suft't chung cua h6n hqp bang 110,5 torr Tfnh gia tri cua hang s6 can bang va ~Go t<;li300 K cua phein ling NO (k) + Br2(k) = 2NOBr (k) Ghi chu~ Tr<;lllgthai tieu chuftn nhi¢t d¢ng hQc duqc dinh nghia theo lip suat rieng phfu cua eau ill khf bang atm ( 760 mmHg ) cau ill : Hay t<;lO m<jt pin ma trang d6 xily phan dng: Pb(r) + CuBri dd 0,01 M) -+ + Cu(r) PbBr2(r) Hay bi~u dien pin theo h¢ th6ng ki hi¢u qui uac va vi€t phuong trlnh llIra pharr ling xily N€u a a m6i di¢n cl!c v 25°C sue di¢n d<jng cua pin bang 0,442 PbBr2(r) bang bao nhieu? 010 EOPb2+1Pb = -0,126 till rich s6 tan cua V: EOCu2+/OJ = 0,34 V cau IV : Nguy~n ill cua nguy~n to X co t6ng s6 h~t co ban bing 180! ti l¢ s6 h<;lt natran / proton gin bang 1,369 Hay cho bi€t cau hlnh electron cua nguyen tti X Tit c~u hinh d6, hay cho bi€t a d<;U1gdem ch~t x, 13 phi kim hay kim lo~i? Hay n~u m¢t VI dl;! pharr ling ho£1h9C d6 minh ho<;1o cau V: Hay vi€t c~u t~o Liuyxa (Lewiqs) cho SO/.Dt!a ma hlnh cua SO/ sv dAy gifra C£1Cc~p electron vao ma hlnh VSEPR( vo ho£1t:rD, hay cho bi€t hlnh d<;U1g (c6 ve h1nh) Th~ n~lOla li~n k~t xlch ma (a) , pi (n ) theo thuyet VB, MO? Hay phm tich VI dl;!N2 de minh ho~ call VI: \ K~t qua giai phUO'rlgtr1nh Sradinga cho h¢ -1t cua Ienta 1ienyl~ nhu sau: Wi ~ c1 c2 C3 -1,732 0,288 0,500 0,576 0,500 0,288 -1,000 0,500 0,500 0,000 -0,500 -0500 , 0,000 0,576 0,000 -0,576 0,000 0,576 1,000 0,500 -0,500 0,000 0,500 -0,500 1,732 0,288 -0,500 0,576 -0,500 0,288 1.Th bieu thuc XI = Cs C4 a ~ E, hay tlnh ~ tuang Ung v6i Wi Ve gian d6 nang luqng cac MO va vi€t c~u hlnh electron cua h~ Tinh Clr, Prs' Fr cua h~ va vi€t SO' d6 (giarr d6) pbm tV n cua h~ I ~ I ) DA-I HOC Qu6C GIA HA N(H THI TUYEN SINH SAD BAr HOC NAM 1999 Mon co sa Ii thlly~t boa hoc va Call tao chat, /-"- ~ : "', " de thi s6 ") '" '," ~; , CiuI: a D6i v6'i phan ung PCl3 (k) + Cl2 (k) ~ PClj (k), 25°C co 6GO =-37,2 kJmol-l; 611° = -87,9kJmol-l; 5f298 cua PCl3 (k) va Cl2 (k) tu0Qg ling bang 311,7 va 222,0 Jmoi"lK-' Tfnh entrapi tieu ehuan tuy~t d6i cua PClj (k) '\ C~u II: o 326°C, 1,3-Butadien dime hoa theo phl10ng trlnh: 2C4H6 (k) ~ CgHI2 (k) Trang m¢t thi nghi~m ap suA'tban clau cua C4H61a 632,0 torr b 326°C Xae diM b~e eua phan (rng va hang 56 toe d¢ cua phan trng d6 theo 56 li¢u sau: Thai gian (phut) Ap su~ftt6ng c¢ng (ton) 0,00 632,0 3,25 618,5 12,18 584,2 24,55 546,8 42,50 509,3 68,05 474,6 Ohi chu: Ne'u can till sinh co th~ su dl;lng giry ear6 d~ ve d6 thi C~u III: Cho the' khu trang m6i truO'ng aXit([tI+J = molLo')cua cac ci;ipoxihoa khu nhu sau: HN02/ EO, = 0,996 V NO N03- / NO E02 = 0,94 V Hay vie't ni'tu phim ftng khu tI1crng U'ng cua tUng C9P Chung minh r~ng HN02 kb6f1g b~n dung dieb no t~o HN03 va NO: HN02 ~ HN03 + NO tv phan buy d~ (1, Ca.u IV: Trong pha.n ill ion A2B g6m ion A + va B2- co t6ng s6 cac h~t la 140, d6 s6 h~t mang di¢n nhieu hO'ns6 h~t kh6ng mang di¢n la 44 M~t khac nguai ta bi~t s6 kh6i cua ion A + Ian hon s6 kh6i cila ion B2- la 23 T6ng s6 cac h~t ion A+nhieu han ion B2- Ia 31 Hay: Xac d~1h di¢n tfch h~t nha.n Z cila A va B Vi~t cau hinh electron cho cacs ion A + va B2Cau V: \ Tren AO-d cila ion Ti3+ thu~c phCtcch~t bat di~n [Ti(H20)6]3+ c6 electron nha:'t.Kill bi kich thich electron se chuy~n len muc nang luqng cao han lam xu~rt hi¢n ph6 htfp tJw v6'i buac song A = 4926A Dva vao thuy~t truOng tinh the (truang ph6i ill) hay: L~p giim d6 tach muc nang luqng cila phuc k~ tren Xac dinh nang Iuqng tach L10 theo kcal/mol gifra hai mUc nang hrqng 010 h=6,62.10-34Js; c = 3.108 ms-1; Ti(Z=22) Ca.u VI: NaCI duqc k~t tinh du6'i c4ng I~p phuong tAm m~t Hay: L Ve m~g t~ b~lOcO'sa (6 m~g co sa) cho tinh the NaCl Tlnh 56 ion Na+ va CI- r6i 5Uy fa 56 pha.n ill NaCl co te bao co sa Xac dinh ban klnh ion cua Ct theo AO Cho d(NaO) = 2,15103 kgm-3; fNa+= 0,95 AO; Na = 22,989; CI =35,45 Chli y: Can b<)coi thi kh6ng can ghli thich them 1)