Cdu 47: Chat hOu co X mach ho c6 dang HjN-R-COOR' (R, R' la cac goc
hidrocacbon), phdn tram khoi luong nito trong X la 15,73%. Cho m gam X phan ling hoan toan vdi dung dich NaOH, toan b6 luong ancol sinh ra cho tac dung
hd't vdri CuO (dun nong) duoc andehit Y (ancol chi bi oxi hoa thanh andehit).
Cho toan b6 Y tac dung vdi mot luong du dung dich A g N O , trong NH3, thu duoc 12,96 gam A g ket tQạ Gia t n ciia m la
Ạ 3,56. B. 5,34. C. 2,67. D. 4,45.
Cdu 48: Trong qua gác chin rat giau ham lugng .
Ạ vitamin A . B. P-caroten
C. ete ciia vitamin A . D. este ciia vitamin A .
Cdu 49: Nhiet phan mot luong A g N O , duoc chat ran X va hon hop khi \ DSn toan
bo Y vao m6t lugng du HjO, thu dugc dung djch Z. Cho toan b6 X vao Z, X chi tan mot phan va thoat ra khf NO (san ph^m khir duy nhát). Biét cac phan ung xay ra hoan toan. Phdn tram khoi lugng ciia X da phan ling la
Ạ 75%. B. 25%. C. 70%. D. 60%.
Cdu 50: X la h6n hgp g6m H , va hoi ciia hai andehit (no, don chiic, mach hd, phan
tijr d&u CO s6' nguySn tiJr C nho hon 4), co ti kh6'i so vdi heli la 4,7. Dun nong
2 mol X (xiic tac N i ) , dugc hdn hgp Y cd ti khoi hoi so vdi heli la 9,4. Thu láy toan b6 cac ancol trong Y roi cho tac dung vdi Na (du), dugc V lit H . (dktc). Gia trj Idn nhát cua V la
Ạ 22,4. B. 11,2. C. 5,6. D. 13,44.
Cdu 51: H6n hgp X gom hai axit cacboxylic no, mach hd Y va Z (phan tir khd'i ciia
Y nhd hon ciia Z ) . Dd't chay hoan toan a mol X, sau phan \xng thu dugc a mol
H2Ọ Mat khac, nd'u cho a mol X tac dung vdi lugng du dung djch NaHCOj, thi thu dugc 1,6a mol CO2. Thanh phdn % theo khoi lugng ciia Y trong X la
Ạ 74,59%. B. 46,67%. C. 40,00%. D. 25,41%.
Cdu 52: Thuc hien cac thi nghidm sau:
(a) Nhiet phan AgNOj.
(b) Nung FeS2 trong khdng khị (c) Nhiet phan KNO3.
(d) Cho dung djch CUSO4 vao dung djch NH3 (du). , (e) Cho Fe vao dung djch CUSO4. ' ^
(g) Cho Zn vao dung djch FeClj (du). (h) Nung Ag2S trong khdng khị (i) Cho Ba vao dung djch CUSO4 (du).
So thi nghiem thu dugc kim loai sau khi cac phan ihig k6't thiic la
Ạ 2. B.3. C.4. D . 5 .
Cdu 53: Cho cac phat h'liu sau:
(a) Cd the dung nudc brom de phan biet glucozo va fructozọ " ' (b) Trong mdi trudng axit, glucozo va fructozo cd the chuyén hoa ISn nhaụ
(d) Trong dung djch, glucozo va fructozo d^u hoa tan Cu(OH)2 b nhiet d6 thir6ng cho dung djch mau xanh lam.
(e) Trong dung djch, fructozo tOn tai chu yéu d dang mach hd.
(g) Trong dung djch, glucozo t6n tai chii yéu a dang vong 6 canh (dang a va P).
Sdphat bi^u dung la : ' : • , ' V,-r?
Ạ 4. B. 2. C. 3. D. 5. "
Cdu 54: Cho m gam b6t Cu vao 400 ml dung djch AgNO, 0,2M, sau .n6t then gian
phan ling thu duoc 7,76 gam h6n hop chait rdn X va dung djch Ỵ Loc tach X, roi them 5,85 gam b6t Zn vao Y, sau khi phan ling xay ra hoan toan thu duoc 10,53 gam «3 chat ran Z. Gia trj cua m la
Ạ 6,40. B. 5,76. C. 3,84. D. 5,12.
Cdu 55: Cho 5,6 gam CO va 5,4 gam HjO vao mot binh kin dung tích kh6ng doi
10 lit. Nung nong binh m6t thdi gian d 830°C de he dat den trang thai can bang: CO(k) + H 2 0 ( k ) ?=i C O 2 ( k ) + H2 ( k ) (hang so can bang Kc = 1). Nong do can bang ciJa CO, HjO Idn luot la
Ạ 0,012M va 0,024M. B. 0,018M va 0,008M. C.0,08Mva0,18M. D. 0,008M va 0,018M.
Cdu 56: Thuy phan h5n hop gdm 0,02 mol saccarozo va 0,01 mol mantozo mot
,^ thcfi gian thu duoc dung djch X (hieu suát phan iJng thiiy phan m6i chát deu la ,^ 75%). Khi cho toan bo X tac dung vdi mot luong du dung djch AgNO, trong
N H , thi luong Ag thu duoc la
Ạ 0,12 mol. B. 0,090 mol. C. 0,095 mol. D. 0,06 mol.
Cdu 57: Phat bieu khong diing la:
Ạ Dipeptit glyxylalanin (mach he*) c6 2 liSn ket peptit.
B. Etylamin tac dung voi axit nitro o nhiet do thucmg tao ra etanol. C. Metylamin tan trong nude cho dung djch c6 moi trucmg bazọ
D. Protein la nhung polipeptit cao phan tij c6 phan tiJr khoi tit vai chuc nghin den vai trieụ
Cdu 58: Hoa tan 25 gam h6n hop X gom FeS04 va Fe2(S04)3 vao nude, thu duoc 150 ml dung djch Ỵ Them H2SO4 (du) vao 20 ml dung djch Y r6i chuan do toan b6 dung djch nay bang dung djch KMn04 0,1M thi dung het 30 ml dung djch chudn. Phdn tram khd'i luong FeS04 trong h6n hop X la
Ạ 13,68%. B. 31,6%. C.9,12%. D. 68,4%.
Cau 59: Trong qua trinh hoat d6ng ciia pin dien hoa Zn - Cu thi Ạ Kh6'i luong cua didn cue Cu giam.
B. Kh6'i luong cQa dien cue Zn tang.
- C. Nong do ciia ion Cú"^ trong dung djch tSng. D. N6ng do ciia ion Zn"* trong dung djch tang.
(
Cdu 60: Cho so do phan ling:
(1) CH3CHC ^ " ^ ^ ) X i ^l^'l - - ' ' • '
H ,t
(2) C 2 H , B r ^ ^ Y , ^ ^ Y 2 ^ ^ Y 3 " ^ ' ' " ' "
Cac chat huu co X , , X,, Y,, Y,, Y 3 la cac san phdm chinh. Hai chat X j , Y, Idn luot la
Ạ axit axetic va ancol propylic.
B. axit 2-hidroxipropanoic va axit propanoic. ,(,.];,„, C . axit 3-hidroxipropanoic va ancol propylic. C . axit 3-hidroxipropanoic va ancol propylic.