hoa-hoc-bttl_thu_thuat_vo_co_dai_cuong

8/6/2019 Hoa-Hoc-BTTL_Thu_thuat_vo_co_dai_cuong

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Kha hcLTH m bo mn HaThy Sn Th thut lm bi trc nghim phn v cv i cng

Hocmai.vnNgi trng chung ca hc tr Vit Tng i t vn: 1900 58-58-12 - Trang | 1 -

BI 1. TH THUT LM BI TRC NGHIMV CV I CNGBI TP T LUYN

Cu 1: Cu hnh electron nguyn t ca Cr l

A. 3d5

4s1

B. 3d4

4s2

C. 3d10

4s1

D. 4s2

4p5

Cu 2: Cho th in cc chun ca cc cp oxi ho-kh sau :

E 3+0

Cr /Cr= -0,74V ; E

2 2

0

H O/H= -0,41V ; E +

2

0

2H /H= 0,00V.

Trong thc t qu trnh no sau y khngxy ra ?

A. Crom tan trong dung dch axit clohiricB. Crom tan trong dung dch kim mnhC. Crom tan trong ncD.Crom tan trong dung dch axit nitric long.

Cu 3: Crom tc dng vi ha cht no sau y to thnh crom(III) clorua ?A. Dung dch HCl B. Kh Cl2 C. Dung dch CuCl2 D. Dung dch NaCl

Cu 4: Cu hnh electron lp ngoi cng 3s23p63d5l ca ion no sau y ?

A. Fe2+ B. Fe3+ C. Cr2+ D. Cr3+

Cu 5: Cho cc phn ng ho hc :

(1) FeO + Al (nung nng) (2) FeCl2 + Cl2

(3) FeCl2(d) + Ag(NO3)2 (4) FeO + NH3 (nung nng)

Cc phn ng trong ion st(II) th hin tnh kh l

A. 1, 2 B. 2, 3 C. 3, 4 D. 2, 4

Cu 6: Cho FeCO3vo dung dch H2SO4c nng, hn hp kh thu c c t khi so vi H2 l

A. 50,67 B. 28 C. 54 D. 26,33

Cu 7: Cho s phn ng sau :

FeS2 X Fe Y FeCl3

X, Y ln lt l cht no sau y ?A. Fe2O3 ; FeCl2 B. Fe(OH)2 ; FeCl2

C. FeO ; Fe2(SO4)3 D. Fe2(SO4)3 ; Fe(OH)2

Cu 8: Cht no c hm lng Fe cao nht trong s cc cht sau ? A. FeCO3 B. FeS2 C. Fe2O3 D.Fe3O4

Cu 9: Thuc th no sau y c th dng nhn ra 3 gi bt cha cc cht (FeO, Fe 2O3) ; (Fe2O3, Fe) ;

(FeO, Fe) ?

A. Dung dch HClB. Dung dch H2SO4c, nngC. Dung dch HNO3 longD. Dung dch H2S

Cu 10: Dng ho cht no sau y loi b cc tp cht AgNO 3trong dung dch mui Fe(NO3)3 ?A. Fe B. Dung dch HClC. Dung dch Fe(NO3)2 D. Cu

Cu 11: Hp cht no sau y khngphi l hp cht lng tnh ?

A. Al2O3 B. Cr2O3 C. Al(OH)3 D. Cr(OH)2Cu 12: Cho phn ng ha hc:


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K2Cr2O7 + KI + H2SO4 .

Phng trnh ho hc c tng h s (ti gin) l

A. 29 B. 31 C. 27 D. 33

Cu 13: Nguyn tc snxut thp l

A. kh ion st trong oxit thnh st t do bng CO nhit caoB. kh cc tp cht trong gang nhm gim hm lng ca chngC. oxi ho cc tp cht trong gang nhm gim hm lng ca chngD. oxi ho oxit st thnh st t do

Cu 14: Dung dch A, B, C trong sut, khng mu c th cha mt trong s cc cht sau : NH 3, NaOH,Ba(OH)2. Cho dung dch ng sunfat vo A, B, C. Thy dung dch A c kt ta xanh, dung dch Bc kt ta xanh sau kt ta tan, dung dch C thy c kt ta xanh ln kt ta tr ng. A, B, C lnlt l dung dch ca cc cht

A.NH3, NaOH, Ba(OH)2 B. NaOH, Ba(OH)2, NH3C. NaOH, NH3, Ba(OH)2 D.NH3, Ba(OH)2, NaOH

Cu 15: Au c th b ho tan trong dung dch no sau y ? A. Dung dch NaOH B. Dung dch H2SO4c, nngC. Dung dch HNO3c, nng D. Dung dch hn hp HNO3 v HCl

Cu 16: Vt bng bc s b i mu thnh en khi tip xc vi ho cht no sau y ?

A.Khng kh c mt hiro sunfua B.Dung dch axit clohiric

C.Nc clo D.Dung dch axit nitric

Cu 17: Cho cc gi tr th in cc chun :

E 2+0

Pb /Pb= -0,13V; E 2+

0

Cu /Cu= +0,34V; E +

0

Ag /Ag= +0,8V v E 2+

0

Zn /Zn= -0,76V.

Th t tnh oxi ha cc ion kim loi tng dn t tri sang phi l

A. Zn2+ , Pb2+, Cu2+, Ag+ B. Ag+ , Cu2+, Pb2+, Zn2+C. Zn2+ , Pb2+, Ag+, Cu2+. D. Pb2+, Zn2+ , Cu2+, Ag+

Cu 18: Nc Svayde l dung dch c cha cht no sau y ?

A. Cu(NH3)4 OH B. Ag(NH3)2 OH C. Cu(NH3)4 (OH)2 D. Zn(NH3)4 (OH)2

Cu 19: 100 gam dung dch FeSO4nng 30,4% c th lm mt mu s mol KMnO4trong mi trngH2SO4 l

A. 1 mol B. 0,5 mol C. 0,25 mol D. 0,2 mol

Cu 20: ho tan 18 gam mt oxit st cn dung dch cha 0,25 mol H 2SO4 long, nu lm bay hi nc th

thu c 65 gam mt mui sunfat ngm nc. Mui c cng thc phn t l A. FeSO4.6H2O B. FeSO4.5H2O C. Fe2(SO4)3.6H2O D. Fe2(SO4)3.5H2O

Cu 21: Cho 5,6 gam bt st vo 250 dung dch cha AgNO 31M. Sau khi phn ng xy ra hon ton, thuc kt ta c khi lng lA. 21,6 gam B. 27 gam C. 32,4 gam D. 27,952 gam

Cu 22: Cho m gam st vo 100 gam dung dch H 2SO4c, nng c nng 73,5% thu c 8,4 lt kh SO2 ktc v dung dch sau phn ng cha 55,6 gam mui. m c gi tr lA.12,85 gam B. 19,6 gam C. 14 gam D. 15,568 gam

Cu 23: Trn 10,8 gam Al vi 32 gam Fe 2O3ri nung nng cho ti khi phn ng nhit nhm xy ra honton. Sn phm thu c c khi lng l

A. 48,2 gam B. 24,8 gam C. 42,8 gam D. 82,4 gam


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Cu 24: Cho cng mt lng 29,12 gam kim loi vo lng d dung dch H2SO4c, nng v dung dchH2SO4long thy lng kh thot ra t hai th nghim chnh lch nhau 6,272 lt ktc. Kim loi dng l

A. Cr B. Fe C. Sn D. Al

Cu 25: luyn 100 tn gang c hm lng st 95% ngi ta cn dng x tn qung manhetit 85% Fe 3O4.

Bit rng trong qu trnh sn xut hiu sut qu trnh chuyn qung thnh gang l 90%. x c gi tr lA. 393,57 tn B. 514,47 tn C. 371,7 tn D. 390,2 tn

Cu 26: Dn V lt kh CO (va ) i qua ng s cha Fe 3O4v CuO nung nng thu c hn hp cht rn.Cht rn ny c ho tan trong dung dch HNO3c nng thu c 2,464 lt kh NO2(ktc). V c gitr lA. 2,24 lt B. 1,232 lt C. 2,464 lt. D. 4,48 lt

Cu 27: Ho tan 28,05 gam hn hp gm Zn, ZnO, Al2O3vo dung dch NaOH d thu c 3,36 lt kh H2 ktc. Nu ho tan hon ton hn hp ny cn dung dch cha 0,55 mol H2SO4long. Thnh phn %khi lng ZnO trong hn hp lA. 28,88% B. 34,76% C. 43,32% D. 57,75%

Cu 28:Nung 136,5 g hn hp mui AgNO3 v Cu(NO3)2khan n khi lng khng i thu c 67 gcht rn. Khi lng AgNO3trong hn hp lA. 42,5 g B. 59,5 g C. 76,5 g D. 69,7g

Cu 29: Ho tan mt hn hp gm Fe, Cr c trn theo t l mol 1:1 trong dung dch HNO 3d, sau phnng thu c 6,72 lt kh NO2 ktc v dung dch cha hai mui nitrat. Khi lng mui c gi tr lA. 25,08 g B. 36 g C. 495,7 g D. 144 g

Cu 30: Kh hon ton m gam Fe3O4bng CO d, sc ton b lng kh thu c vo dung dch Ca(OH)2d thy c 10 g kt ta. Gi tr ca m lA. 5,8 g B. 23,2 g C. 11,6 g D. 6,96 g

Gio vin: Phm Ngc SnNgun: Hocmai.vn
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