Dissociation Constants Of Inorganic Acids And Bases Page 2
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2Dissociation Constants of Inorganic Acids and Bases
8-41
Name
Formula
Step
t/°C
pK
a
2
25
7.21
3
25
12.32
Phosphorous acid
H
PO
1
20
1.3
3
3
2
20
6.70
Pyrophosphoric acid
H
P
O
1
25
0.91
4
2
7
2
25
2.10
3
25
6.70
4
25
9.32
Selenic acid
H
SeO
2
25
1.7
2
4
Selenious acid
H
SeO
1
25
2.62
2
3
2
25
8.32
Silicic acid
H
SiO
1
30
9.9
4
4
2
30
11.8
3
30
12
4
30
12
Sodium ion
Na
25
14.8
+
Strontium(II) ion
Sr
25
13.2
+2
Sulfamic acid
NH
SO
H
25
1.05
2
3
Sulfuric acid
H
SO
2
25
1.99
2
4
Sulfurous acid
H
SO
1
25
1.85
2
3
2
25
7.2
Telluric acid
H
TeO
1
18
7.68
2
4
2
18
11.0
Tellurous acid
H
TeO
1
25
6.27
2
3
2
25
8.43
Tetrafluoroboric acid
HBF
25
0.5
4
Thiocyanic acid
HSCN
25
–1.8
Water
H
O
25
13.995
2
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