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103
F7809
2 _____________
50 22B
( )
10
1 1.
4 2. 32.5 7.176
25.3240 25.324 25.32 25.3
2 3.
4 4.
NaCl NaNO3 K2SO4 KBr
1 5.
3 6. H2C2O4
1 2
2 7.
3 8. A 0.1 M 15 B 0.1 M 10 A B
PO43
HPO42PO43
H2PO4HPO42
H2PO4
4 9. 25
0.3 M C6H12O6 0.3 M CO(NH2)2
0.3 M NaCl 0.3 M Na2CO3
2 10. 3s
Al Na K Ba
4 11.
2 12. KMnO4
1 13. SO2S 32 O 16
50.0% 33.3% 25.0% 10.0%
3 14.
4 15.
2 16.
2 17. TC To contain
3 18. - -
OH NH4 H2O H3O
4 19. AgCl(s)AgCl(s)
1 20. ( ) X ( ) ( ) ( )
1 21.
TGA
AA
GC TCD
4 22.
3 23. Cu2+
CuO Cu(OH)2
Cu(NH3)42+ Cu2O
1 24.
ZnS BaSO4 Ag2CrO4 PbCrO4
2 25.
1 26.
SrCl2 Ca(NO3)2 KCl NaNO3
4 27. NH4SCN
Mn2+ Zn2+ Ni2+ Co2+
2 28. 0.1M
FeCl3NaOH FeSO4K3[Fe(CN)6]
FeCl3K4[Fe(CN)6] FeSO4KSCN
3 29.
2 30. [Fe(C2O4)3]3
+2
4
1 31. Relative Error
56.38% 54.15%
4.118% 3.955% 2.230% 1.986%
1 32. a 0.88 a
C=12 O=16 Ca=40
0.8 1.6 2.0 2.4
3 33. 5 250 20 100
250
2 34. Volhard method Ag+Ag+2.0
100 Fe3+ 0.1M KSCN
KSCN 25 Ag+% Ag=108
6.75 13.5 27.0 40.5
1 35. EDTA
(1) 0.6
pH 100
(2) 25 50 EBT Eriochrome Black T
EDTA EDTA 25
EDTA M C=12 O=16 Ca=40
0.06 0.12 0.24 0.32
2 36. Beer’s law
1 37.
3 38. C=O 1820-1660cm 1
4 39. 60 0.1M Na2C2O41M 40 70
20
C=12 O=16 Na=23 K=39 Mn=55
31.60 28.44 23.70 18.96
4 40. 50 0.5M
25
4 41.
pH=5 [H+] pH=3 [H+] 100
60 pH=7
90 pH>7
10 pOH=7 pH>7
3 42. 1.5 200 50 0.1M
30
250 125 62.5 45.5
2 43. A 0.05M M(NO3)2100 B 0.02M NaX 400 A
B 3.0 MX2MX2KSP
1.2×10-8 6.4×10-8 3.2×10-7 9.6×10-7
2 44. PbCl2KSP 1.2 10-5 2.0 1.0M
Cl=35.5 Pb=207
3.336×10 4 6.672×10 3 1.334×10 2 2.669×10 1
4 45. 0.2M 0.6M % CH3COOH
Ka=1.8×10 5
5
104.5
4
104.5
3
108.1
2
108.1
3 46. H2S(aq) Ka1=1.0 10 7Ka2=1.2 10 15 0.1M H2S
H2S(aq) 2H+(aq) + S2(aq) Ka= Ka1+ Ka2
[H+] 0.2M
[HS ] 10 4M
[S2] 1.0×10 7M
2 47. 200 0.1M a pH=5
aCH3COOH Ka=1.8 10 5H=1 C=12 O=16 Na=23
1.538 2.952 3.455 4.386
1 48.
NH4Cl Na3PO4 KNO3 CH3COONa
2 49. 50.4 H2C2O42H2O 400 1.2
m H=1 C=12 O=16
0.2 0.9 1.6 2.2
4 50.