On Tap Hoc Ki 2 Hoa 10

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H v tn:

N TP HC K II

A. PHN TRC NGHIMCu 1: cho cc pht biu sau:

(a) Trong hp cht, cc halogen (F,Cl,Br,I) u c s oxi ha -1, +1, +3, +5, +7

(b) Ozon c th c dng ty trng tinh bt, cha su rng, st trng nc sinh hot.

(c) Dung dch NaF long dng lm thuc chng su rng

(d) pha long axit H2SO4 c ta rt t t axit vo nc v khuy nh bng a thy tinh.(e) Hng s cn bng ch ph thuc vo nhit Trong cc pht biu trn, s pht biu ng: A. 2

B. 4

C. 3

D. 5Cu 2: Pht biu no sau y l khng ng:

A. SO2 c dng ty trng giy, bt giy, cht chng nm mc trong lng thc, thc phm

B. Trong cc halogen, clo l nguyn t tn ti trong v tri t di dng hp cht nhiu nht

C. dung dch AgNO3 vo dung dch NaF thu c kt ta trngD. Cht rn, cht xc tc khng nh hng n s chuyn dch cn bng

Cu 3: Pht biu no sau y l ng:

A. Nhm halogen c 7 electron lp ngoi cng (ns2np5) v c xu hng nhng i 1e c cu hnh e bn vngB. Nhm oxi c 6 electron lp ngoi cng (ns2np4) v c xu hng nhn thm 2e c cu hnh e bn vngC. Cc n cht halogen c tnh oxi ha mnh, trong tnh oxi ha gim dn theo th t I2, Br2, Cl2, F2D. Tnh axit HF > HCl > HBr > HI v tnh kh F- < Cl- < Br- 0. Cn bng khng b chuyn dch khi:

A. gim nng HI.B. gim p sut chung ca h. C. tng nhit ca h. D. tng nng H2Cu 18: (HA09) Cho 3,68 gam hn hp gm Al v Zn tc dng vi mt lng va dung dch H2SO4 10%, thu c 2,24 lt kh H2 ( ktc). Khi lng dung dch thu c sau phn ng:

A. 101,68 gam.

B. 88,20 gam.

C. 101,48 gam.

D. 97,80 gam.Cu 19: (C13) Trong bnh kn c h cn bng ha hc sau: CO2(k) + H2(k) ( CO(k) + H2O (k); H > 0

Xt cc tc ng sau n h cn bng: (a)Tng nhit (b) Thm mt lng hi nc(c) gim p sut chung ca h

(d) dng cht xc tc(e) Thm mt lng CO2. Trong nhng tc ng trn, cc tc ng lm cn bng chuyn dch theo chiu thun: A. (a) v (e)

B. (b), (c) v (d)C. (d) v (e)

D. (a), (c) v (e)

Cu 20: trung ha 20 ml dung dch H2SO4 1M cn 50 ml dung dch NaOH x mol/l. Gi tr ca x l:

A. 0,80

B. 0,40

C. 2,50

D. 1,25Cu 21: Cho 20g hn hp bt Mg, Fe tc dng vi dung dch HCl d thy thot ra 4,48 lt kh H2 (ktc). Khi lng mui thu c: A. 27,10g

B. 34,20g

C. 2,71g

D. 3,42g

Cu 22: Cho 15,8g KMnO4 phn ng ht vi dung dch HCl c d thu c V lt kh Cl2 (ktc). Gi tr ca V:

A. 0,896

B. 6,72 lt

C. 8,40 lt

D. 5,60 litCu 23: dung dch cha 50 ml dung dch HCl 2M vo dung dch cha 2g NaOH. Nhng qu tm vo dung dch thu c, qu tm chuyn sang mu: A.

B. khng mu

C. xanh

D. tmA. Cu 24: cho 18,4g mui Magie halogenua X tc dng vi dung dch AgNO3 d thu c 37,6g kt ta. Cng thc ca X:B. MgF2

B. MgCl2

C. MgBr2

D. MgI2Cu 25: (C14) t chy 11,9g hn hp gm Zn, Al trong kh Cl2 d, sau khi cc phn ng xy ra hon ton thu c 40,3g hn hp mui. Th tch kh Cl2 (ktc) phn ng: A. 8,96 ltB. 6,72 ltC. 17,92 ltD. 11,2 lt

Cu 26: Trn m gam H2SO4 98% vi 150 ml nc c dung dch H2SO4 50% ( bit DH2O = 1g/ml). Gi tr m:

A. 125,50g

B. 200,16g

C. 156,25g

D. 105,00

Cu 27: Cho 13g Zn v 5,6g Fe tc dng vi dung dch H2SO4 long, d thu c V lt kh (ktc). Gi tr ca V:

A. 4,48

B. 2,24

C. 6,72

D. 67,2Cu 28: t chy hon ton m gam FeS2 thu c 2,24 lt kh SO2 (ktc). Bit hiu sut phn ng l 80%. Gi tr ca m:

A. 6g

B. 12g

C. 7,5g

D. 4,8gCu 29: (HA14) Ha tan ht 1,69g oleum c cng thc H2SO4.3SO3 vo nc d. Trung ha dung dch thu c cn V ml dung dch KOH 1M. Gi tr ca V l: A. 10

B. 40

C. 30

D. 20

Cu 30: (HB13) Ha tan hn hp X gm 11,2g Fe v 2,4g Mg bng dung dch H2SO4 long d, thu c dung dch Y. Cho dung dch NaOH d vo Y thu c kt ta Z. Nung Z trong khng kh n khi lng khng i, thu c m gam cht rn. Bit cc phn ng u xy ra hon ton. Gi tr ca m:

A. 24

B. 20

C. 36

D. 18Cu 31: (C12) Cho phn ng ha hc: Br2 + HCOOH 2HBr + CO2Lc u nng ca HCOOH l 0,010 mol/l, sau 40 giy nng ca HCOOH l 0,008 mol/l. Tc trung bnh ca phn ng trong khong thi gian 40 giy tnh theo HCOOH:

A. 2,0.10-4 mol/(l.s)B. 5,0.10-5 mol/(l.s)C. 2,5.10-4 mol/(l.s)

D. 2,5.10-5 mol/(l.s)B. PHN T LUNCu 1: Hon thnh dy chuyn ha sau, ghi r iu kin nu c (bit mi mui tn l mt phn ng) KClO3 O2a, KMnO4 Cl2 HCl NaCl NaOH NaClO NaHCO3 Na2SO4 BaSO4 CaOCl2 AgCl Ag O2

b, FeS H2S S SO2 H2SO4 HCl FeCl3 FeCl2

SO3 Fe

Cu 2: So snh tnh oxi ha ca cc halogen, ca O2 v O3, chng minh bng phn ng ha hc.Cu 3: Nhn bit cc cht sau bng phng php ha hc:

a, Cc cht kh: H2S, O3, HCl, Cl2, CO2

b, Cc dung dch : NaF, NaCl, NaBr, NaI (1 thuc th)

c, H2SO4, HCl , NaCl(1 thuc th)

Cu 4: Gii thch cc hin tng sau: a, Khng dng bnh thy tinh ng dung dch HF. b, dng bng bc b xm en khi lu ngoi khng kh c, Nc Gia-ven v kh clo m c tnh cht ty mud, Sc kh SO2 vo dung dch Br2 v dung dch Ca(OH)2 d

Cu 5: Hp th hon ton 12,8g SO2 vo 250 ml dung dch NaOH 1M. Tnh khi lng mui to thnh sau phn ng

Cu 6: Cho 23,2 gam hn hp X gm Cu v Fe vo dung dch axit HCl d thu c 6,72 lt kh (ktc). Mt khc, cng cho cng khi lng X trn tc dng va vi V1 lit dung dch axit H2SO4 98% (nng, D = 1,84g/ml ) thu c V2 lt kh SO2 (ktc, sn phm kh duy nht) v dung dch Y.C cn dung dch Y thu c m gam mui khan.

a, Tnh phn trm v khi lng mi kim loi trong X

b, Tnh V1, V2 v m

p n:

1. Phn trc nghim

1B(a: sai, flo ch c s oxi ha -1 trong mi hp cht)- 2C-3B-4B-5C-6D-7A-8C-9C-10D-11D-12A-13D-14D-15A-16B-17B-18C-19A-20A-21A-22D-23A-24C-25A-26C-27C-28C- 29B-30B-31B

Cu 30: (HB13) Ha tan hn hp X gm 11,2g Fe v 2,4g Mg bng dung dch H2SO4 long d, thu c dung dch Y. Cho dung dch NaOH d vo Y thu c kt ta Z. Nung Z trong khng kh n khi lng khng i, thu c m gam cht rn. Bit cc phn ng u xy ra hon ton. Gi tr ca m:

A. 24

B. 20

C. 36

D. 18nFe = 0,2; nMg = 0,1FeFeSO4 Fe(OH)2 Fe2O3 (v nung trong khng kh c O2 nn to Fe2O3 cn nu nung khng c khng kh ch to FeO)

MgMgSO4 Mg(OH)2 MgO

Nn:

2Fe Fe2O3

0,2 0,1

Mg MgO

0,1 0,1

m = mFe2O3 + mMgO = 20g2. Phn t lunCu 3: Nhn bit cc cht sau bng phng php ha hc: a, Cc cht kh: H2S, O3, HCl, Cl2, CO2

b, Cc dung dch : NaF, NaCl, NaBr, NaI (1 thuc th)c, H2SO4, HCl, NaCl(1 thuc th) Hng dn

a, Dng qu tm m: H2S,HCl, CO2 : qu tm ha V Qu tm m c H2O nn: Kh H2S + H2O dd axit H2S; kh HCl + H2Odd axit HCl

CO2 + H2O H2CO3Cl2: qu tm mt mu v Cl2 + H2O HCl + HClO, nguyn t Cl trong HClO c s oxi ha + 1 th hin tnh oxi ha mnh lm cho kh Cl2 m c tnh cht ty mu.O3: khng lm i mu qu tm

(thuc th nhn bit O3 thng dng dd KI, phn ng: O3 + KI + H2O O2 + I2 + KOH, dung dch thu c c mi trng baz (KOH) lm qu tm chuyn sang mu xanh hoc lc ly cht rn I2 cho vo h tinh bt s lm cho h tinh bt chuyn sang mu xanh)

phn bit kh H2S,HCl, CO2 dng dd AgNO3

H2S + 2AgNO3 Ag2S + 2HNO3

en

HCl + AgNO3 AgCl + HNO3

Trng

CO2 + dd AgNO3 khng xy ra

Thuc th nhn bit kh CO2 thng dng nc vi trong d, hin tng to kt ta trng

CO2 + Ca(OH)2 CaCO3 + H2O

b, dd AgNO3c, BaCO3BaCO3 + H2SO4 BaSO4 + CO2 + H2O

BaCO3 + HCl BaCl2 +CO2 + H2O

BaCO3 + NaCl khng xy raCu 4: Gii thch cc hin tng sau:

a, Khng dng bnh thy tinh ng

Thnh phn chnh ca thy tinh l SiO2, axit HF c tnh cht n mn thy tinh do xy ra phn ng:SiO2 + HF SiF4 + H2O

b, dng bng bc b xm en khi lu ngoi khng kh v trong khng kh c tn ti kh H2S, O2 nn xy ra phn ng: 4Ag + 2H2S + O2 2Ag2S + 2H2O ; Ag2S c mu en nn dng bng bc b xm en khi lu ngoi khng kh

c, Nc Gia-ven v kh clo m c tnh cht ty muThnh phn ca nc Gia-ven l NaCl+ NaClO+ H2O, Cl trong NaClO th hin tnh oxi ha mnh lm cho Nc Gia-ven c tnh cht ty mukh clo m c tnh cht ty mu v Cl2 + H2O HCl + HClO, Cl trong HClO th hin tnh oxi ha mnh lm cho

kh clo m c tnh cht ty mu.

d, Sc kh SO2 vo dung dch Br2 v dung dch Ca(OH)2 d

Sc kh SO2 vo dung dch Br2 hoc dung dch thuc tm (KMnO4); hin tng: mt mu do xy ra phn ng:

SO2 + Br2 + 2H2O 2HBr + H2SO4

5SO2 + 2KMnO4 + 2H2O 2H2SO4 + 2MnSO4 + K2SO4

Sc kh SO2 vo dung dch nc vi trong (Ca(OH)2 ) d hoc dung dch Ba(OH)2 d; hin tng : dung dch vn c do xy ra phn ng:

SO2 + Ca(OH)2 CaSO3 + H2O

Trng

SO2 + Ba(OH)2 BaSO3 + H2O

TrngCu 5: m= 21,9g

Cu 6: Cho 23,2 gam hn hp X gm Cu v Fe vo dung dch axit HCl d thu c 6,72 lt kh (ktc). Mt khc, cng cho cng khi lng X trn tc dng va vi V1 lit dung dch axit H2SO4 98% (nng, D = 1,84g/ml ) thu c V2 lt kh SO2 (ktc, sn phm kh duy nht) v dung dch Y.C cn dung dch Y thu c m gam mui khan.

a, Tnh phn trm v khi lng mi kim loi trong X

b, Tnh V1, V2 v m

Hng dn

a, % Cu= 27,6%; %Fe = 72,4%

b, ly cng mt khi lng X nn s mol ca Fe v Cu phn ng vi HCl v H2SO4 l nh nhau

Tnh mH2SO4 mdd H2SO4 V1 = = 59,78 ml 0,06 ltV2 = 12,32 lt

m = mFe2(SO4)3 + mCuSO4 = 76gCc em c li bi tp nhm halogen, nhm oxi. Trong qu trnh bin son khng trnh khi thiu st, mong nhn s gp ln sau hon chnh hn.Chc cc em hc tt

+1

Phn 1

+1

LP 10 CB

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