S_N1 reaction is favoured by:

JEE Main Chemistry question

reaction is favoured by:

(A)Non-polar solvents
(B)More alkyl groups on the carbon atom attached to the halogen atomCorrect
(C)Small groups on the carbon attached to the halogen atom
(D)None of the above

Answer: (B)

Solution

proceeds through a carbocation intermediate, so it is favoured by substrates that can form a more stable carbocation — i.e. more alkyl groups (more substitution: tertiary > secondary > primary) on the carbon bearing the halogen, since alkyl groups stabilise positive charge by

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Question ID VK-148243