[r]
(1)UBND riNn rnAI NcuvtN
so crAo DUC vA EAo r4o
of cuixu rnfc
C6u 1: ( 3,0 di6m ) .
t Co lq h6a ctr6t Ui m6t nhf,n, m5i t9 tlgng mQt dung dch mui5i nitat cira mQt,kim lopi:
Ba(NO3)2, Al(NO3)r, Pb(N9e)2, Zn(NOr), AgN93, Cd(NO3)2 Chi dusc dung h6a chdt
hm thu6; tht, h5,
"nan'Uitit tung dung dich mutii Tdnh bdy c6ch tiiSn hinh thi nghiQm
clO
nhAn bitit m6i dung dich muiSi ilpng m5i tq vd vii5t phucrng trinh h6a hgc xiry
(dang phucrng trinh ion)
2 Cho so dd c6c phucmg fiinh h6a hgc:
(1) (x) + HCI -+ (Xr) + (x2) + Hro (s) (x, + Ba(oH)z + (&)
(2) (Xr) +NaOH -+ J(&) + (&) (6) (Xr)+NaOH + .ffi,) + (Xe) +
(3) (xr) + Cl2 -+ (x5) (7) (xr) + HCI -+ (x2) +
Ki THr cHeN Hgc sINH GIoI riNu LGP t2 NAtvl HQC 2013-20L4
wt0x rHI: HoA HQC (YoNG I )
(ThN gian ldm bdi 180 phil kh1ng *a *Ai gian giao di)
(4) (X3) + H2O + Oz -+ It}(6l (8)(Xs)+ (xs)tHzo -+ (X+)+ Hoan thAnh c6c phucrng trinh h6a hgc vd cho biOt cdc ch6t X, Xr, , Xg
Cffu 2: ( 4,0 tli6m.)
t- Cfro g nguy0n t6 A, & X (Zn%y%d d0u & nh6m A vd kh6ng ctng chu ki trong b6ng tu6n hodn TOng sO luqng tu chinh cria electron cuiSi cirng ctra {rguy6n"ti, A,.& X (ki hiQu
Hn tuqt li: na, nn nx) bdoe 6; tdng s5 lugng trl phg cira chring ba"S 2;t6ngsii luqng tt tir
berg -2 virt6ng sii lugng tu spin berrg -L/2trangtl6 s0 lugng tir spin ctra ea LiL+112 a X6c ttinh A, & X Cho bi6t deng hinh hgc ctra phdn tr? AzR vd A2X So s6nh g6c h6a
tri trong 2phtntu d6 vd gi6i thfch
b D6i v&i phdn tu &XR: vi ion )G42-, hdy vi6t cOng thrlc ki6u Lewis, cho bi6t dang
hinh hgc vi kang th6i lai h6a cira nguydn trl trung t6m
2.HW ch6t vO co X thenh phAn c6 nguyCn t5, c6 120 q Mx < 145 Cho X phan img vdi Oz thu dugc ch6t nfr6t y Cho Y phan rlng vdi HzO thu dugc 2 axrt vO co A vi B A phin img vdi dung dich AgNO: thu dugc ki5t tua t itne C, k6t tua ndy tan dung dlch NH3 B phan rmg vdi dung dlch NaOH du thu du-ry c mulii D D phan ring vdi dung dich
AgNO3 thu dugc k6t tua vang B Ch6t X khi ph6n ting vdi HzO thu dugc 2 axitld G vi A,
khi dun n6ng G thu dugc axit B vd H
X6c dlnh c6ng thrlc phdn tu cric chilt A,B,C,D,X,Y,G,H vd viSt c6c phuong trinh h6a hgc xiry
C6u 3: ( 3,0 di6m )
1 Hidrocacbon A c6 CTPT le CeHrg A c6 khi nhng t6c dpng vdi Br2 khan, xric t5c b$t
Fe, t0 Cho A tfc dpng vdi Hz, xric tdc Ni, t0 thu dugc B c6 CTPT ld CgHrz Oxi ho6 B bing
O2 HzSO+ thu dugc axeton X6c dinh CTCT vd gqi t6n A, g Vi6t c6c PTItrI xhy Trinh biy cs ch6 phan tmg kAi B t6c d3rg vdi Br2 khan, xric t6c b$t Fe, t0
2.Yi6tc6c PTttr{ thuc hi$n d6y chuyEn h6a sau:
Etilen -+ (A) cno'P , qg ) -# (C) 4.+ (D) -s , (q) -r4'-+ G) -93-+ tCl
19*-**J l-4-r1Hl
(2)Cffu4:(5,0tli6m)
1* Ti"h pH ctra d""e dich A g6m KCN 0,120M; NH4CI 0,150M vd KOH 0,155M
b Tinh-th6 tich dung dicfr ftCt 0,210M cAn cho vdo 50,00 ml dung dich A cltl pH cua
h6n hqrp thu duo c ba"g 9,24
Cho bi6t Ku cta HCN li 10'e'35; ctra NHf le 10'e'24 ,
,
2 Cho 37,2 gam h6n hqrp X giim: R, FeO, CuO (R h kim lo4i chi c6 h6a tri II, hidroxit
ctra R ktrdng co tinh ludng tinh) vdo 500 gam dung dich HCI 14,6 ya (HCl dune du), sau
phan rmg thu dugc dung dich A, ch6t ren B n{ng 9,6 gam (chi chria mQt kim lopi) vb.6,72
litH.z(dktc).Cho dung dichA t6c.dpng vdi dung dich KOH du, thu dugc,ket,tta D Nung
k}t tda D kh6ng kh( d6n kh6i luqng kh6ng d6i thu dugc 34 gam ch6t rdn E g6m hai oxit
a Tim R vi % kh6i lugng cria mdi ch,it h6n hgp X
b Tfnh ndng d0 phen tr6m cria c6c ch6t dung dich A Cflu 5: ( 5.0 tliiim )
ffi; frerp xe6r{ hai ch6t A,B le <l6ng phen ctra chrla C,}r,o, m5i ch6t chi chria mQt
nh6m chrii, d5u c6 phan ring vdi NaOH theo ti lQ mol li 1:1 L6y 12,9 garnh6n hqrp X cho t6c dpng virra dtr vO{ZS ml dung dich NaOH 2M thu dugc h5n hqp Y
a.Xic di{r cOng thric ph6n tu cua A,B
b Chia f,An hd Y thanh ph6n b6ng MQt phAn cho t6c dung frSt vOi dung dich
AgNO-3 Xftr au thu dugc 2I,6 gamh&fiVAe M$t phAn dem cO c?n tl-ru dugc 6,55 gam h5n hqrp muOi khan X6c dinh cOng thrtc c6u t4o phir hgp cria A,B vd tinh kh6i luqng mdi ch6t ffong L2,9 ganhSn hqp X.
2 Thiry phAn ktrOng holn toan peptit A, c6 phan fii kh6i liL293 dvC vd chrla 14,3% N
(theo t<tr6i tuo-ng) thu du-o c peptit B vd C M6u chria A,472 gam peptit B dun n6ng,
pna" img hoan to* u6i 18 mi durrg dich HCl 0,222 M MAu chria 0,66.6 gam peptit C khi dun nOng, phin img hoan toan vOi 4J nildung dlch NaOH l,6Ya (kh0i lugng ri0ng ctia
dung dich NaOH ld 1,022 g/ml) Xic dinh CTCT ctra peptit A.
(Cho: H=1; C :12; N=14; O=16; Na=Zi; Be=9; Mg=24; Al:27; P=31; S-32;
Cl=35,5; K=39; Fe=56; Cu=64; Br=80; Ag=108J
( Gidm' ;,;; ;;,;; ;,;II; ; ;| ;;;:: r t h o m)
Hg vd t6n thi sinh:
2