Table 3.
Calculated pKa of the conjugate acids of various adducts
| DMPO•-X | pKa |
|---|---|
| -OSOH | 13.2 |
| -SO2H | 5.9 |
| -OSO2H | 3.6 |
| -SO3H | 0.9 |
| -OSO3H | −1.3 |
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