MDCAT Chemistry MCQ #637

How do the kinetic order and molecularity differ between a standard SN1 and a standard SN2 reaction mechanism?

MDCAT Chemistry MCQ #637

  1. Question 1

    Q1. How do the kinetic order and molecularity differ between a standard SN1 and a standard SN2 reaction mechanism?

    • A) SN1 is a second-order reaction involving two molecules.
    • B) SN2 is a first-order reaction involving one molecule.
    • C) SN2 is a second-order reaction and is bimolecular.
    • D) SN1 is a zero-order reaction and is unimolecular.

    Answer: SN2 is a second-order reaction and is bimolecular.

    Explanation: The order of a reaction is an experimental value (2 for SN2), while molecularity is the number of species in the rate-determining step.