MDCAT Chemistry MCQ #619

A student doubles the concentration of NaOH during the alkaline hydrolysis of methyl bromide. How does this change affect the rate of this SN2 reaction?

MDCAT Chemistry MCQ #619

  1. Question 1

    Q1. A student doubles the concentration of NaOH during the alkaline hydrolysis of methyl bromide. How does this change affect the rate of this SN2 reaction?

    • A) The reaction rate remains constant regardless of hydroxide concentration.
    • B) The reaction rate doubles when the hydroxide concentration is doubled.
    • C) The reaction rate quadruples when the hydroxide concentration is doubled.
    • D) The reaction rate decreases as hydroxide concentration increases.

    Answer: The reaction rate doubles when the hydroxide concentration is doubled.

    Explanation: SN2 reactions are bimolecular where rate depends on both reactants, unlike SN1 where the nucleophile concentration does not affect the rate.