# 5.5  Why is the ester hydrolysis slow in the beginning and becomes faster after sometime?

Ester hydrolysis-

$Ester(RCOOR) + water(H_{2}O) \rightarrow Acid(RCOOH) + Alcohol (ROH)$

Initially, the reaction is slow but after some time the reaction is fast because of the acid produced, act as a catalyst for this reaction. These type of reaction known as auto-catalysis.

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