Right answer is (a) CH3COOC2H5 + NaOH → CH3COOH + H2O
Explanation: The reactions CH3COOC2H5 + H2O → CH3COOH + C2H5OH, C2H5COOC2H5 + H2O → C2H5COOH + C2H5OH and C12H22O11 + H2O → glucose + fructose are examples of pseudo first order reaction because water is present in excess and is assumed to remain constant is all the reactions but the reaction CH3COOC2H5 + NaOH → CH3COOH + H2O is an example of second order reaction and follows second order kinetics with rate law R=k [CH3COOC2H5] [NaOH].