Question

Which compound in the following pair reacts faster in S_N2 reaction with OH^–?

1. CH₃Br or CH₃
2. CH₃Cl, (CH₃)₃CCl

Options

• CH₃Br and CH₃Cl

• CH₃Br and (CH₃)₃CCl

• CH₃Br and CH₃I

• CH₃Cl and CH₃Br

Answer 1

CH₃Br and CH₃Cl

Explanation:

For the S_N2 reaction leaving group should be good and alkyl halide should be primary. So, CH₃Br and CH₃Cl are primarily organic compounds. Hence the rate of S_N2 reaction will be more.