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| no. | equilibrium model | equilibrium expression | pKa value |
|---|---|---|---|
| 1 | H2(ASCH3)2+ = H++ H(ASCH3)+ | Ka1 = [H+][H(ASCH3)+]/ H2(ASCH3))2+] | 4.53 (0.10) |
| 2 | H(ASCH3)+ = H+ + (ASCH3) | Ka2 = [H+][(ASCH3)]/[H(ASCH3)+] | 8.83 (0.09) |
| 3 | H2O = H+ + OH– | KH2O = [H+][OH–] | 14.00 (const.) |
