Why is ester hydrolysis slow in the beginning and becomes faster after some time?

Explanation

An ester on hydrolysis gives an alcohol and an acid.
`underset("Ester")(RCOOR')+H_(2)O overset(H_(2)SO_(4)" (few drops)")to underset("Carboxylic acid")(RCOOH)+underset("Alcohol")(R'OH)`
A small amount of dil. `H_(2)SO_(4)` is added in the beginning to start the reaction. as the reaction proceeds, a carboxylic acid (RCOOH) is produced. As the aount of carboxylic acid produced increases, the rate of ester hydrolysis also increases.