${\mathrm{CH}}_3\mathrm{COOH}+{\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}\frac{\text{ Conc. }{\mathrm{H}}_2{\mathrm{SO}}_4}{\text{ heat }}$${\mathrm{CH}}_3{\mathrm{COOC}}_2{\mathrm{H}}_5+{\mathrm{H}}_2\mathrm{O}$
The above reaction is known as

Esterification process when alcohol reacts with a carboxylic acid in the presence of an acid. This process results in the formation of ester.