SN 1 reaction is favoured by:

MCQ

S_N1 reaction is favoured by:

A
Non-polar solvents
B
Bulky group on the carbon atom attached to the halogen atom.
C
Small groups on the carbon atom attached to halogen atom.
D
All the above

✓

Answer

Bulky group on the carbon atom attached to the halogen atom.

Explanation:

S_N1 mechanism proceeds through carbocation formation and as stability of carbocation increases, it favours S_N1 mechanism.

And as we add bulky group to carbon attached with halogen, carbocation formed will become more stable due to +I effect of bulky alkyl group so it favours S_N1 mechanism.

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