Consider the following statements: The law for the acid-catalysed hydrolysis of an ester being given as rate = K[H+][ester] = K' [ester]. If the acid (strong) concentration is doubled at constant este

Question

Consider the following statements: The law for the acid-catalysed hydrolysis of an ester being given as rate = K[H+][ester] = K' [ester]. If the acid (strong) concentration is doubled at constant ester concentration, 1. The second-order rate constant, K, is doubled. 2. The pseudo first-order rate constant, K' is doubled. 3. The rate of reaction is doubled. Which of the above statement is correct?

Prashant Kotian · Accepted Answer

Correct answer: B. The true second-order rate constant K depends only on temperature, so it remains unchanged. The pseudo first-order rate constant K' = K[H+]. If [H+] is doubled, K' doubles. Consequently, the reaction rate also doubles. Thus, statements 2 and 3 are correct. Therefore, correct answer is B.

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