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Dissociation Constants for Weak Acids |
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|
Name |
Formula |
Ka1 |
Ka2 |
Ka3 |
|
Acetic Acid |
HC2H3O2 |
1.8 x 10–5 |
|
|
|
Arsenic Acid |
H3AsO4 |
5.5 x 10–3 |
1.7 x 10–7 |
5.1 x 10–12 |
|
Arsenious Acid |
H3AsO3 |
5.1 x 10–10 |
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|
|
Ascorbic |
H2C6H7O6 |
8.0 x 10–5 |
1.6 x 10–12 |
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|
Aspartic Acid |
H3C4H4NO4 |
1.0 x 10–2 |
1.3 x 10–4 |
1.3 x 10–10 |
|
Benzoic |
HC7H5O2 |
6.5 x 10–5 |
|
|
|
Boric |
H3BO3 |
5.4 x 10–10 |
|
|
|
Butanoic acid |
CH3(CH2)2COOH |
1.5 x 10 -5 |
|
|
|
Carbonic |
H2CO3 |
4.5 x 10–7 |
4.7 x 10–11 |
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|
Chloroacetic |
HC2H2O2Cl2 |
1.4 x 10–3 |
|
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|
Chlorous |
HClO2 |
1.1 x 10–2 |
|
|
|
Citric |
H3C6H5O7 |
7.4 x 10–3 |
1.7 x 10–5 |
4.1 x 10–7 |
|
Cyanic |
HCNO |
3.5 x 10–4 |
|
|
|
Dichloroacetic |
Cl2CHCOOH |
5.0 x10-2 |
|
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|
Ethanethiol |
CH3CH2SH |
2.9 x 10 -11 |
|
|
|
Formic |
HCHO2 |
1.8 x 10–4 |
|
|
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Hydroazoic |
HN3 |
2.5 x 10–5 |
|
|
|
Hydrocyanic |
HCN |
6.2 x 10–10 |
|
|
|
Hydrofluoric |
HF |
6.3 x 10–4 |
|
|
|
Hydrogen peroxide |
H2O2 |
2.4 x 10–12 |
|
|
|
Hydrogen sulfide |
H2S |
8.9 x 10–8 |
1.0 x 10–19 |
|
|
Hypobromous |
HBrO |
2.8 x 10–9 |
|
|
|
Hypochlorous |
HClO |
4.0 x 10–8 |
|
|
|
Hypoiodous |
HIO |
3.2 x 10–11 |
|
|
|
Iodic |
HIO3 |
1.7 x 10–1 |
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|
|
Lactic |
HC3H5O3 |
8.3 x 10–4 |
|
|
|
Maleic |
H2C4H4O5 |
1.5 x 10–2 |
8.5 x 10–7 |
|
|
Malonic |
H2C3H2O4 |
1.5 x 10–3 |
2.0 x 10–6 |
|
|
Nitrous |
HNO2 |
5.6 x 10–4 |
|
|
|
p-Nitrophenol |
NO2(C6H4)OH |
7.1 x 10 -8 |
|
|
|
Oxalic |
H2C2O4 |
5.9 x 10–2 |
6.4 x 10–5 |
|
|
Periodic |
HIO4 |
2.3 x 10–2 |
|
|
|
Phthalic acid |
C6H4(COOH)2 |
1.3 x 10 -3 |
3.9 x 10 -6 |
|
|
Phenol |
HC6H5O |
1.3 x 10–10 |
|
|
|
Phosphoric |
H3PO4 |
7.5 x 10–3 |
6.2 x 10–8 |
4.8 x 10–13 |
|
Phosphorous |
H3PO3 |
5.0 x 10–2 |
2.0 x 10–7 |
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|
Propionic |
HC3H5O2 |
1.3 x 10–5 |
|
|
|
Selenic Acid |
H2SeO4 |
Very large |
1.2 x 10–2 |
|
|
Selenous |
H2SeO3 |
2.4 x 10–3 |
4.8 x 10–9 |
|
|
Succinic acid |
(CH2)2(COOH)2 |
6.9 x 10 -5 |
2.5 x 10 -6 |
|
|
Sulfuric |
H2SO4 |
Strong |
1.2 x 10–2 |
|
|
Sulfurous |
H2SO3 |
1.7 x 10–2 |
6.4 x 10–8 |
|
|
Tartaric |
H2C4H4O6 |
1.0 x 10–3 |
4.6 x 10–5 |
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|
Tellurous |
H2TeO3 |
5.4 x 10–7 |
3.7 x 10–9 |
|
|
Thiophenol |
C6H5SH |
3.0 x 10 -7 |
|
|
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Trichloroacetic |
Cl3CCOOH |
2.1 x 10 -1 |
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Dissociation Constants for Weak Bases |
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|
Name |
Formula |
Kb |
|
|
|
Ammonia |
NH3 |
1.8 x 10–5 |
|
|
|
Aniline |
C6H5NH2 |
4.3 x 10–10 |
|
|
|
Diethylamine |
(C2H5)2NH |
1.2 x 10 -3 |
|
|
|
Dimethylamine |
(CH3)2NH |
4.8 x 10–4 |
|
|
|
Ethylamine |
C2H5NH2 |
6.5 x 10–4 |
|
|
|
Hydrazine |
H2NNH2 |
1.3 x 10–6 |
|
|
|
Hydroxylamine |
HONH2 |
8.7 x 10–9 |
|
|
|
Methylamine |
CH3NH2 |
4.4 x 10–4 |
|
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Morphine |
C17H19NO3 |
1.6 x 10–6 |
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|
Piperidine |
(C5H10)NH |
1.9 x 10 -3 |
|
|
|
Pyridine |
C5H5N |
1.8 x 10–9 |
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|
|
Strychnine |
C21H22N2O2 |
1.8 x 10–6 |
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|
Triethylamine |
(C2H5)3N |
6.0 x 10 -4 |
|
|
|
Trimethylamine |
(CH3)3N |
6.4 x 10–5 |
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|
Urea |
(NH2)2CO |
1.2 x 10–14 |
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