The hydrolysis of an ester was carried out separately with 0.05 M and 0.05 M . Which of the following is true for the first-order rate constant of the reaction?

Question

The hydrolysis of an ester was carried out separately with 0.05 M $HCl$ and 0.05 M $H_2SO_4$. Which of the following is true for the first-order rate constant of the reaction?

Prashant Kotian · Accepted Answer

Correct answer: B. Ester hydrolysis is acid-catalyzed, where rate is ∝ [H+]. is a strong monoprotic acid giving [H+] = 0.05 M. is a diprotic acid that dissociates completely in the first step and partially in the second step, giving a total [H+] > 0.05 M. Since [H+]_H2SO4 > [H+]_HCl, we have K_HCl < K_H2SO4.

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