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| 范 圍 | pH | H+濃度(mol/L) | OH-濃度(mol/L) |
| 酸性 | 0 | 1 | 0.00000000000001 |
| 1 | 0.1 | 0.0000000000001 | |
| 2 | 0.01 | 0. | |
| 3 | 0.001 | 0. | |
| 4 | 0.0001 | 0.0000000001 | |
| 5 | 0.00001 | 0.000000001 | |
| 6 | 0.000001 | 0. | |
| 中性 | 7 | 0.0000001 | 0.0000001 |
| 堿性 | 8 | 0. | 0.000001 |
| 9 | 0.000000001 | 0.00001 | |
| 10 | 0.0000000001 | 0.0001 | |
| 11 | 0. | 0.001 | |
| 12 | 0. | 0.01 | |
| 13 | 0.0000000000001 | 0.1 | |
| 14 | 0.00000000000001 | 1 |