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RELATIVE STRENGTHS OF ACIDS IN
AQUEOUS SOLUTION AT 1 atm AND 298 K
CONSTANTS FOR VARIOUS EQUILIBRIA
AT 1 atm AND 298 K
H2O( )
H (aq)
OH (aq)
Kw
1.0
10
14
H2O( )
H2O( )
H3O (aq)
OH (aq)
Kw
1.0
10
14
CH3COO (aq)
H2O( )
CH3COOH(aq)
OH (aq)
Kb
5.6
10
10
Na F (aq)
H2O( )
Na (OH)
HF(aq)
Kb
1.5
10
11
NH3(aq)
H2O( )
NH4 (aq)
OH (aq)
Kb
1.8
10
5
CO3
2 (aq)
H2O( )
HCO3 (aq)
OH (aq)
Kb
1.8
10
4
Ag(NH3)2 (aq)
Ag (aq)
2NH3(aq)
Keq
8.9
10
8
N2(g)
3H2(g)
2NH3(g)
Keq
6.7
10
5
H2(g)
I2(g)
2HI(g)
Keq
3.5
10
1
Compound
Ksp
Compound
Ksp
AgBr
5.0
10
13
Li2CO3
2.5
10
2
AgCl
1.8
10
10
PbCl2
1.6
10
5
Ag2CrO4
1.1
10
12
PbCO3
7.4
10
14
Agl
8.3
10
17
PbCrO4
2.8
10
13
BaSO4
1.1
10
10
Pbl2
7.1
10
9
CaSO4
9.1
10
6
ZnCO3
1.4
10
11
Conjugate Pairs
ACID
BASE
Ka
HI
H
I
very large
HBr
H
Br
very large
HCl
H
Cl
very large
HNO3
H
NO3
very large
H2SO4
H
HSO4
large
H2O
SO2
H
HSO3
1.5
10
2
HSO4
H
SO4
2
1.2
10
2
H3PO4
H
H2PO4
7.5
10
3
Fe(H2O)6
3
H
Fe(H2O)5(OH)
2
8.9
10
4
HNO2
H
NO2
4.6
10
4
HF
H
F
3.5
10
4
Cr(H2O)6
3
H
Cr(H2O)5(OH)
2
1.0
10
4
CH3COOH
H
CH3COO
1.8
10
5
Al(H2O)6
3
H
Al(H2O)5(OH)
2
1.1
10
5
H2O
CO2
H
HCO3
4.3
10
7
HSO3
H
SO3
2
1.1
10
7
H2S
H
HS
9.5
10
8
H2PO4
H
HPO4
2
6.2
10
8
NH4
H
NH3
5.7
10
10
HCO3
H
CO3
2
5.6
10
11
HPO4
2
H
PO4
3
2.2
10
13
HS
H
S
2
1.3
10
14
H2O
H
OH
1.0
10
14
OH
H
O
2
10
36
NH3
H
NH2
very small
Note: H (aq)
H3O
Sample equation: HI
H2O
H3O
I
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