The functional group present in a molecule that undergoes hydrolysis in the presence of an acid catalyst to produce an alcohol and a carboxylic acid is an ester group. Esters have the general formula RCOOR', where R and R' are alkyl or aryl groups. Example 1:Ethyl acetate CH3COOCH2CH3 is an ester that can undergo hydrolysis in the presence of an acid catalyst, such as sulfuric acid H2SO4 . The reaction is as follows:CH3COOCH2CH3 + H2O CH3COOH + CH3CH2OHEthyl acetate + Water Acetic acid + EthanolExample 2:Methyl benzoate C6H5COOCH3 is another ester that can undergo hydrolysis in the presence of an acid catalyst. The reaction is as follows:C6H5COOCH3 + H2O C6H5COOH + CH3OHMethyl benzoate + Water Benzoic acid + MethanolIn both examples, the ester reacts with water in the presence of an acid catalyst to produce a carboxylic acid and an alcohol.