Which one of the following is not true for the hydrolysis of t-butyl bromide with aqueous NaOH?

JEE Main Chemistry question

Which one of the following is not true for the hydrolysis of -butyl bromide with aqueous NaOH?

(A)Reaction occurs through the mechanism.
(B)The intermediate formed is a carbocation.
(C)Rate of the reaction doubles when the concentration of alkali is doubled.Correct
(D)Rate of the reaction doubles when the concentration of -butyl bromide is doubled.

Answer: (C)

Solution

-Butyl bromide, a tertiary halide, hydrolyses by the mechanism: the slow, rate-determining step is unimolecular ionisation of the substrate to form a stable tertiary carbocation, which is then rapidly captured by hydroxide. Hence the rate law is — first

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Question ID VK-148028