Chemistry-SN1 & SN2 Reactions
NEET Chemistry SN1 & SN2 Reactions MCQ Question
Type: MCQ-numerical-Hard-Class 12
Given the following haloalkanes, which one is expected to have the fastest SN2 reaction rate with a nucleophile?
A
C6H5CH2Br
B
C6H5CH(CH3)Br
C
C6H5CH(C6H5)Br
D
C6H5CH2Cl
Correct Answer
Option A
Detailed Explanation
C6H5CH2Br is a primary bromide, which is less hindered and more favorable for SN2 reactions compared to secondary bromides like C6H5CH(CH3)Br and C6H5CH(C6H5)Br. Additionally, bromide is a better leaving group than chloride, making C6H5CH2Br the fastest.
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