Thus, the solvent used in the reaction plays a crucial role in determining whether the reaction will proceed via the S₁ or S₂ mechanism, making option (A) the correct answer.
The type of reaction (S₂ or S₁) that a haloalkane undergoes depends on the solvent used. In polar aprotic solvents, S₂ reactions are favored, whereas in polar protic solvents, S₁ reactions are more likely. The stability of the carbocation and the nature of the leaving group also play a role, but the solvent is the primary factor in determining whether the reaction proceeds via an S₁ or S₂ mechanism.
Match List-I with List-II: