Q. 35

Which of the foll A. A carbocation will be formed as an intermediate in the reaction.

B. OH will attach the substrate (b) from one side and Cl will leave it

simultaneously from other side.

C. An unstable intermediate will be formed in which OH and Cl will be

attached by weak bonds.

D. Reaction proceeds through SN1 mechanism.

Answer :

The given reaction is a nucleophilic substitution that follows SN1 mechanism as it is a tertiary alkyl halide. It is a two-step reaction. The first step is the slow cleavage of polarised C—Br bond which produces a carbocation and a bromide ion. This stable intermediate carbocation is then attacked by nucleophile OH- to complete the substitution. The correct statements are (i) and (iv).

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