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1400 0C
4
7 XYX
Y
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9 0.1 M0.02 mol / L
pOH
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10
atom g X3 F
X2O3
X2O
XO2
XO
11
12
-
-
6
+7
+5
+4
+3
+2
30 26 25 24 23 21
1315
3131
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14
15
16
7
17
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BaCl2 XH2O 2.9603 g
2.3923 g
Ba =137 , C =35.5 , O = 16 , H = 1
8
19
II
II
III
III
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21
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pH5.5
9
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25
IIIIII
10
26
27
28
11
29
32
31
-
-
12
32
33
CH3COOH CH3COO- + H
+
HC
3435
74 g mol
C = 12 , O = 16 , H = 1
34
13
35
36
A H2SO4 C2
B
C K2Cr2O7
A , B
A pH7
2000CB
K2Cr2O7
A , B
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37
38
39
15
42
-
-
41 H2SO4
42
2 mol
2,1
2,1
2,2
2,2
16
43
44
10000 CAuC3
Au = 196.89 u , C = 35.5 u ]
-
-
17
45 KP
N2(g) + 3H2(g) 2NH3(g)
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