Question

Mixed
SN1
and
SN² mechanism :​

Answer 1

In SN1 reaction, there is one molecule reacting in the reaction intermediate state or the transition state. A carbocation which is planar in nature is first formed. Then a nucleophile attacks on the carbocation to form the intermediate or the transition state. Here the nucleophile is free to attack from either side of the substrate. Therefore, there occurs racemization.

.

In SN2 reaction, there are two molecules react in the reaction intermediate state or the transition state. The leaving group departs simultaneously as soon as the nucleophile attacks the molecule or the substrate from the backside. Hence in the product side, there occurs inversion of the configuration