11.4: pKa Table
- Page ID
- 215882
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pKa VALUES OF COMMON ORGANIC AND INORGANIC ACIDS
R = alkyl group
| Acid | pKa | Conjugate Base |
 |
-10 |  |
| HBr | -9 |  |
| HCl | -7 |  |
| HO-SO3H (H2SO4) | -10 |  |
 |
-2 |  |
 |
-1.7 |  |
 |
0 |  |
| HF | 3 |  |
 |
5 |  |
 |
4-5 |  |
 |
5 |  |
| H2CO3 | 6.4 |  |
| H2S | 7 |  |
| HCN | 9.2 |  |
 |
9 |  |
 |
9.2 | H3N |
 |
10 |  |
| RSH | 11 |  |
| H2O | 15.7 |  |
| ROH (alcohols) | 16-17 |  |
 |
20 |  |
 |
25 |  |
 |
25 |  |
| NH3 | 38 |  |
| ArCH3 | 40 |  |
 |
44 |  |
 |
~ 48–53 |  |