Can bQ coi thi khong giai th i ch gi them.. HQ va ten thl sinh:...[r]
(1)DAI HQC Quac GIA TP HCM TRUONG PHO THONG NANG KHIEU
DE THI TUYEN SINH LOP 10 NAM 2010 Mon thi: HOA HOC
Thai gian lam bQi:120 phut, khOng k~thai gian philt i1~
Call 1Vi~t cae phuO'ng trlnh hoa hQe minh hQa eho eae thf nghi~m sau:
a) Cho mi~ng Ca vao 6ng nghi~m ehua dung djeh FeCb, sau phan ung h~t, d6 h6n hqp phim (mg len iliathUy tinh va pho'i ngoai khOngkhL
b) Cho bQt Cu van axit sunfurie d~m d~e,r6i dun n6ng, dfin khl sinh qua dung djeh Ca(OH)2 Call Tir cae nguyen li~u ban d~u g6m: Cu kim lo~i, dung dich axit clohidrie, da voi, nuae, khOng khf, than da, hay neu phuO'ng phap (vi~t cae phuong trlnh hoa hQc) di€u ch~ cae san phAm sau:
a) CuCh b) Ca(OH)2 va Czl12
Call D6t 2,500 g uranium (U) khong khf thu duqe 2,949 g mQtoxit etia uranium Hay xac dinh eong th(rc h6a hQe ctia oxitnay
Call Hoan ehu6i phan (rng sau:
a) Al ~ AICb ~ AI(OHh ~ AI20j ~ Al b) S ~ ZnS ~ H2S ~ S02 ~ K2SOj
Can D~ xac djnh ham IUQng ion s~t(H) nuae, nguo'i ta dung phuong phap chufrn dQvai dung djeh KMn04 moi trU'erngaxil Phan (rngxay thee SO'd6 sau:
FeS04 + KMn04 + H2S04 ~ Fe2(S04h + MnS04 + K2S04 + H20
a) Hay I~pphuong trlnh hoa hQe cua phan ung tren, xac djnh eh~t oxi h6a, ch~t khu
b) Xae djnh ham luqng sAt(H)(g/L) mQt mfiu nuae, bi~t r~ng 25,00 mL mfiu nuae phan
(mg vua du vo-i14,50 mL dung djeh KMn04 0,0 10M
Can D6t ehay hoan toan mQt eh~t huu cO' X e6 kh6i IUQTIgmol la 86 gam thu duqc nuac va khf cacbonic c6 56mol b~ng Xac djnh c6ng th(rc phan t(rva vi~t cae cong thuc e~u t~o c6 th~ c6 ctia X, n~u bi~t X co kha nang cho phan (mg trang guong Xac djnh cong th(rc c~u t~o chfnh xac ctia X, n~u bi~t X c6 mQt nguyen ill cacbon phi d6i x(rng (nguyen tucacbon phi d6i xung co nh6m th~ khac nhau)
Call Xac dinh cong thuc du t~octia cac ch~t A,H, Mtrong sO'd6 chuy~n d6i hoa hQc sau:
a)A + Na ~ H + 1/2H2 b) CjH6+Br2 ~ C
c)C+2H ~ D +2NaBr d)D+2H20 ~ ~
e)~+2H2~E- t)E~G+H20
g)A+CH}COOH ~ H h)nH ~!
i)! + nNaOH ~ K + nCH}COONa
k) A + HCI ~ 1 I) n1 ~ M
Cho bi~t: il D c6 eongth(rc phan tu C7Hg; iil Chi co CjH6 vaG la cac hqp ch~t co c~u t~o m~ch vong;
iiil RC=CH + H20 ~ RCOCH}; iv/! ,Kva M la cac polime
Call Cho 45,0 (g) mQt h6n hqp X chua metanol, glixerol va nuac ph{m ung vua du vai natri kim lo?i t~o v (L) khl hidro (dktc) va m (g) mQt h6n hQ'Pch~t r~n Y tAt ea m (g) h6n hqp Y phan (rng hoan toan vai 250 (mL) dung djch HCI 20,0 %(t)'trQng 1,098 g/mL).
a) Tfnh th~ tfch V (L) khf hidro (dkte) t~o
b) Tinh kh6i IU'QTIg(g) natri kim lo~i da tham gia phan (rng c) Tinh kh6i IUQTIgm (g) h6n hqp ch~t r~n Y t~o
d) N~u d6t chay hoan toan 18,0 (g) h6n hQ'PX tren thu duqc 15,12 (g) nuae Xae dinh ham IUQTIg %kh6i luqng cac ch~t co h6n hqp X
H = 1;C== 12; N == 14; == 16; S==32, K=39, Mn == 55, Fe = 56, U =238
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Thi sinh khong dm?,c sir dt,mgUliIi~n.Can bQ coi thi khong giai thich gi them