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??????????????????,????????????

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Title: 1 Last modified by: xugh Created Date: 12/19/2003 3:39:04 PM Document presentation format: Other titles: Times New Roman ... – PowerPoint PPT presentation

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Title: ??????????????????,????????????


1
??????????
  • ????????

?.????
?.???
?.???
?.????
???????? ???
2
?.????
  • ??????????????????,???????????????,?????
    ???????

(?)????????????
???????????????????????(?????????),???????
??????
3
  • 1. 46 g??????????????????,????????????????(????)?(
    )
  • A.44.8 L B.11.2 L C.22.4 L
    D.5.6 L

2Na O2 Na2O2 2Na2O2 2H2O 4NaOH
O2?
??? 4Na O2
423 g 22.4L 46 g
V(O2)
V(O2)11.2 L
4
  • 2.?????????????????????????????(x)???????????????
    ????
  • Ca(ClO)2CaCl22H2SO42CaSO42Cl2?2H2O
  • ???????????x,??????????????2.00
    g,?????,??250 mL????,???????????,??25.0
    mL,?????KI?????????,?????????????KI?????,?0.100
    mol/L?Na2S2O3????????????I2,????
  • 2Na2S2O3I2Na2S4O62NaI??????Na2S2O3??20.0mL?????
    ?????????x?

5
  • Cl2 2KI I2 2KCl
  • 2Na2S2O3I2Na2S4O62NaI

??? Cl2 I2 2Na2S2O3
71 g 2 mol m (Cl2)
m (Cl2) 0.71 g
X 0.71 g / 2.00 g 100 35.5
6
(?)??????????????????????
  • 3.?FeS2 65??????????,?1.8?????????????????2
    t????98??????????????????
  • 4FeS211O2 2Fe2O3 8SO2
  • 2SO2 O2 2SO3
  • SO3 H2OH2SO4

??? FeS2 2H2SO4
120
196 2 t65(1-1.8) 98m(?H2SO4)
m(?H2SO4) 2.13 t
7
  • 4.?????(?????Fe3O4)?,?????Fe(OH)3????Fe2O3,????Fe2
    O3????????????Fe3O4?????,?????????

??????m,??Fe3O4??????w 2Fe3O4 3Fe2O3
2232 3160 mw w g
8
(?)?????????????
  • ??????????????????????????,????????????

5.???????????,???????????????????????????????????
???( ) A.13 B.23 C.11
D.43
2e
6
4
(NH4)2SO4SO2
??? N2??3SO2
9
  • 6.???????????????????,???????,??????????,???????
    ,?????????H2S?Na2SO3?????( C )
  • A.12 B.21
  • C.3463 D.6334

??? 2H2S??Na2SO3
234 126
10
?.???
  • ?????????????????,????????????????????????
    ????????????????????,?

??????????????????????,???????????????????
?
11
(?)????
  • 7.KCl?KBr?????8.00g???????,?????AgNO3??,????13
    .00g,???????????????

KCl ? AgCl
KBr ? AgBr
Cl?Br????????,????K ? Ag
K ? Ag ?m 39 108
108-39 m(K) 13.00 g-
8.00 g
m(K)2.83 g
12
  • 8. 25.4g NaHCO3?AgNO3????,???500???,?????????,??,
    ???????,???????,????25.5 g,?????AgNO3????( A )
  • A.17 g B.8.5 g C.8.4 g
    D.9.2 g

??AgNO3NaHCO3 , ??AgNO3NaNO3,AgNO3????????
NaHCO3 ? NaNO3 ?m 84
85 1 m(NaHCO3)
25.5g-25.4g
m(NaHCO3)8.4g
m(AgNO3)25.4g-8.4g17g
13
(?)??????
  • 9.?????,H2?O2?????a L,??????????,???????b
    L,????????H2??????( AD )

2H2 O2 2H2O ?V
2 1 0
3
(a-b)L
??,????????????????????
14
  • 10.??H2S???????????
  • 2H2S O2(??) 2S? 2H2O
  • 2H2S 3O2(?) 2SO2 2H2O
  • 120??,H2S?O2???????????????,????30,????
    ???H2S??????

2H2SO22S?2H2O ?V 2 1
0 2 1
2H2S3O22SO22H2O ?V 2 3
2 2 1 ?
????????,???????H2S???1 / 2?
?????H2S?23060
15
(?)??????
  • 11.???????a mol CO2??,????Na2O2?,????b
    mol,?????CO2??????( )
  • A.2b mol B.(a-b)mol
  • C.2(a-b)mol D.(2a-b)mol

2Na2O22CO22Na2CO3O2 ?n
0 2 0 1
1 n(CO2)
(a-b)mol
n(CO2)2(a-b)mol
16
  • 12.?1???????200??,??????100 mol?????,????????,????
    ???73 mol????????H2?O2??????????

2H2 O2 2H2O ?
n
  • 1 2
    1
  • n(H2) n(O2) 100
    mol-73mol

??????????? n(H2)54mol,n(O2)27mol
?O2??,???H2 54mol,O2?100mol-54mol46mol
?H2??,???O2 27mol,H2?100mol-27mol73mol
17
  • 13.??????,?0.4 mol ?????(C2H2)??????1mol???O2?????
    ??,???????,???????0.65 mol,???????????????

CH4 2O2 CO2 2H2O ? n
1 2 1
2
n(CH4)
2n(CH4)
2C2H2 5O2 4CO2 2H2O ? n
2 5 4
3
0.4 moL-n(CH4)
0.6mol-1.5n(CH4)
2n(CH4) 0.6mol-1.5n(CH4) (10.4-0.65)mol
n(CH4) 0.3mol
18
?.????
  • ????????????(???????????,?????????????,???????
    ???????)??????????

??????????????????(?????),????????????????????
???,???????????????????????
19
1.????????
  • ????Aa Bb (A B)c

????
(agtcgtb)
20
2.??????????
a?b c A?B A/B
1 ??????(????) ????????(??????) ??????(???????) ?????(??????)
2 ????????? ???????? ????????(????) ????????(?????)
3 ???????? ????????? ?????? ?????
4 ??????(??????????? ???????????(?????????????) ??????(???????????) ???
5 ?? ???? ???? ???
6 ???????? ???????? ???????? ????????
21
14.MgO?CuO???????,?????????25,?????MgO?CuO?????
  • MgO?,O40,CuO?,O20

22
15.?????105B?115B???????????5.4
g?????????B2H6(??)???,???????5.6
L??,????????????????? A.11 B.13
C.14 D.12
  • 2BB2H6
  • 2M(B) g 22.4L
  • 5.4g 5.6L

M(B) 10.8
23
16.????????????????????,??????????????????????,??
?????????????????2Cu(NO3)2 2CuO 4NO2?O2??
  • ??Cu ? CuO,Cu(NO3)2 ? CuO,?????CuO????????
    ????????,????????CuO,??M(?)M(CuO)80?

24
?.???
  • ??????????????????????????????????????????
    ??,????????????????,??????????????????

25
19.2.3 g?????????????????3.5 g??,???????????
A.??Na2O B.??Na2O2
C.Na2O?Na2O2 D.????
  • ?Na?????Na2O,
  • 2Na ? Na2O

?Na?????Na2O2, 2Na ? Na2O2
46g
62g
46g
78g
m(Na2O)3.1g
2.3g
m(Na2O2)3.9g
2.3g
3.1glt3.5glt3.9g
????????Na2O?Na2O2?????
26
23. 1.4 g?????????????,????????????????????1.79g,?
??????????????( )? A.25.7
B.35.2 C.44.5 D.64.5
  • ?1.4g?????R
  • R ? ROH

?1.4g??R2O R2O ? 2ROH
M1(R)
M1(R)17
2M2(R)16
2M2(R)34
1.79g
1.4g
1.4g
1.79g
M1(R)61
M2(R)24.3
24.3ltM(R)lt61
M(R)39
???????
27
  • ?1.4g??K
  • K ? KOH

?1.4g??K2O K2O ? 2KOH
39
56
94
256
m1(KOH)
1.4g
1.4g
m2(KOH)
m1(KOH)2.01g
m2(KOH)1.67g
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