MDCAT Chemistry MCQ #646

In the reaction between methyl bromide and sodium hydroxide, doubling the concentration of both reactants increases the rate fourfold. What is the rate law?

MDCAT Chemistry MCQ #646

  1. Question 1

    Q1. In the reaction between methyl bromide and sodium hydroxide, doubling the concentration of both reactants increases the rate fourfold. What is the rate law?

    • A) Rate = k[RX]
    • B) Rate = k[Nu]
    • C) Rate = k[RX]0[Nu]
    • D) Rate = k[RX][Nu]

    Answer: Rate = k[RX][Nu]

    Explanation: SN2 kinetics depend on both the alkyl halide and the nucleophile concentrations; first-order is wrong because it only applies to the SN1 mechanism.