JEE Main Chemistry question
Consider the following statements. The rate law for the acid-catalysed hydrolysis of an ester being given as
Rate==k'[ester]
If the acid concentration is doubled at constant ester concentration,
1. The second order rate constant, , is doubled. 2. The pseudo first order rate constant, , is doubled. 3. The rate of the reaction is doubled.
Which of the above statements are correct? [Manipal 2008]
Answer: (B)
Solution
The true (second order) rate constant is an intrinsic constant of the reaction at a given temperature and does not change when a reactant's concentration is changed — so statement 1 is false. Doubling
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