Which of the following catalyst is used in the Esterification of ethanoic acid?

${\mathrm{CH}}_3\mathrm{COOH}+{\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{OH}\stackrel{\mathrm{Acid}}{\rightleftharpoons }{\mathrm{CH}}_3{\mathrm{COOCH}}_2{\mathrm{CH}}_3+{\mathrm{H}}_2\mathrm{O}$

Esters are most frequently created through the esterification reaction between an acid and an alcohol. Absolute ethanol and ethanolic acid combine to form an ester in the presence of an acid catalyst.