Verified Solution • 2025–26 Session moderate

QAIPMT-2008-Ch-2214: NEET 2008 Chemistry - Class 12 AIPMT-2008-Ch-2214 Solution: In a \(S_N2\) substitution reaction of the type \(R-Br+Cl^-…

In a SN2S_N2 substitution reaction of the type R−Br+Cl−→R−Cl+Br−R-Br+Cl^-\rightarrow R-Cl+Br^- which one of the following has the highest relative rate?

Multiple Choice Options

  • A https://pub-09328fb7cd7b4b94aaf562e6bb66ceaf.r2.dev/photos/1c676b0b4eab4c1d84a08a577e690fb03b745ee374847d2250dbe0dd35a15896.webp
  • B CH3CH2BrCH_3CH_2Br
  • C CH3CH2CH2BrCH_3CH_2CH_2Br
  • D https://pub-09328fb7cd7b4b94aaf562e6bb66ceaf.r2.dev/photos/c93184d185567f8cafa2c5c031d0e05ea2900a913e41f66b7fb0e71fa5a16197.webp

Step-by-Step Verified Solution

S N 2 mechanism is followed in case of primary and secondary halides i.e., S N 2 reaction is favoured by small groups on the carbon atom attached to halogens so CH 3 � X > R � CH 2 � X > R 2 CH � X > R 3 C � X

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