Question

Rate of $S_{N}2$ depends on:

• A. conc. of Nucleophile
• B. conc. of substrate
• C. nature of leaving group
• D. nature of solvent

Answer 1

Answer: (A), (B), (C), (D)

The correct options are
A conc. of Nucleophile
B conc. of substrate
C nature of leaving group
D nature of solvent

The rate of $S_{N}2$ reaction is given by the expression $r=k\left[S\right]\left[N\right]$
Here, $S$ and $N$ are the substrate and nucleophile respectively.
Thus the $S_{N}2$ reaction is the second-order reaction and its rate depends on the concentration of the substrate as well as the nucleophile.
It also depends on the nature of the leaving group and on the nature of the solvent.

Hence, the correct options are $A$, $B$, $C$ and $D$