MHT CET 2026 Chemistry question

Which one of the following factors proceeds more rapidly unimolecular nucleophilic substitution reaction?

(A)Aprotic Solvent
(B)Stronger nucleophile
(C)Weaker nucleophile
(D)Polar protic solventCorrect

Answer: (D)

Solution

The reaction is a two-step process whose rate-determining step is the ionisation of the alkyl halide to a carbocation and a halide ion: ; rate . A polar protic solvent (water, alcohol) stabilises both the carbocation and the leaving group (through ion-dipole

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Question ID VK-096241