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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
_1491078853.unknown
_1491200572.unknown
_1491200631.unknown
_1491078851.unknown
