Consider the following statements The rate law for the acid catalysed hydrolysis of an ester being given as Rate= k[H+] [ester]= k' [ ester]. If the acid concentration is doubled at constant ester concentration 1. The second order rate constant, k is doubled. 2. The pesudo first order rate constant, k is doubled. 3. The rate of the reaction is doubled. Which of the above statements are correct?

Question

Consider the following statements The rate law for the acid catalysed hydrolysis of an ester being given as Rate= k[H+] [ester]= k' [ ester]. If the acid concentration is doubled at constant ester concentration 1. The second order rate constant, k is doubled. 2. The pesudo first order rate constant, k is doubled. 3. The rate of the reaction is doubled. Which of the above statements are correct? (A) 1 and 2 (B) 2 and 3 (C) 1 and 3 (D) 1, 2 and 3

Tardigrade Admin · Accepted Answer

Pseudo first order rate constant is doubled as well as rate of reaction is doubled. It may be noted that in presence of acid, hydrolysis of ethyl acetate is a pseudo-unimolecular reaction but the actual value of k depends upon the concentration of H+ ions, otherwise rate constant of a reaction is constant at constant temperature.