Question

Addition of ethanol aqueous, to the benzyl chloride does not increase the rate of the
hydrolysis but changes only the composition of the final products. This indicates that the reaction is proceeding through:

• A. $S_{N}1$ mechanism
• B. $S_{N}2$ mechanism
• C. $S_{E}1$ mechanism
• D. $S_{E}2$ mechanism

Answer 1

The correct option is A $S_{N}1$ mechanism

Rate of $S_{N}1$ reactions depends only on one reactant and rate of $S_{N}2$ reactions depends on both reactants.
here reaction's rate is depending only on one reactant so it follows $S_{N}1$ mechanism.