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An incorrect statement with respect to S...

An incorrect statement with respect to `S_(N)1` and `S_(N)2` mechanism for alkyl halide is:

A

A strong nucleophile in an aprotic solvent increases the rate or favours `S_N2` reaction

B

Competing reaction for an `S_N2` reaction is rearrangement

C

`S_N1` reaction can be catalysed by some Lewis acids

D

A weak nucleophile and a protic solvent increases the rate or favours `S_N1` reaction

Text Solution

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The correct Answer is:
B
`S_N1` reaction occurs through the formation of carbocation as intermediate. Hence, rearrangement occur in `S_N1`reaction and not in `S_N 2` reaction. `SN_1`reaction is favoured in presence of a polar protic solvent and a weak nucleophile. Astrong nucleophile is an aprotic solvent increases the rate of `S_N2`reaction.
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