Formation constant | ||||
pH | 4.0 | 4.5 | 5.0 | 5.5 |
Statistical method | 3.4E+05 | 1.6E+06 | 1.4E+09 | 9.2E+09 |
Graphical method | 6.2E+05 | 2.8E+06 | 3.6E+09 | 1.2E+11 |