Question

Arrange following molecules in the order of SN2 reaction.​

Answer 1

The order of the following molecules in SN2 reaction will be :-

A > B > C

• SN2 reactions follow second order kinetics that is the rate depends upon the concentration of both the reactants
• The rate of SN2 reaction is inversely proportional to steric overcrowding in transition state .
• Hence, the reactivity of (A) will be highest followed by (B) .
• (C) is least reactive because bulky groups hinder approaching nucleophiles .
• Thus, order of reactivity is primary > secondary > tertiary
• So order will be A > B > C .