Question: Explain the following statement: The Henderson-Hasselbalch equation (with activity coefficients) is always true; what may not be correct are the values of [A-] and [HA]

Explain the following statement: The Henderson-Hasselbalch equation (with activity coefficients) is always true; what may not be correct are the values of [A-] and [HA] that we choose to use in the equation.

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