JEE Main20199 Apr 2019Evening ShiftChemistryHaloalkanes and HaloarenesActual
Increasing order of reactivity of the following compounds for S N 1 substitution is:
Options
- AB < C < D < A
- BB < A < D < C
- CA < B < D < C
- DB < C < A < D
Correct answer
B. B < A < D < C
Step-by-step solution
SN 1 reactivity order ∝ stability of carbocation SN1 is unimolecular because the slow step of the reaction involves only the substrate, the reaction is unimolecular. Because only the substrate is present in the transition state, the rate of the reaction depends only on its concentration and not on the concentration of the nucleophile.