# Derivation of Henderson–Hasselbalch equation

While deriving the Henderson–Hasselbalch equation why don't we consider the hydrolysis reaction? For example if we consider an acidic buffer of acetic acid and sodium acetate, why do we not consider the hydrolysis of the acetate ion furnished by sodium acetate?

• Unclear what you mean here. Isn't the whole point that you are accounting for the interaction of the acid and conjugate base with water via the equilibrium?
– Zhe
Mar 6 '19 at 18:50
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