MDCAT Chemistry MCQ #998

In a multi-step reaction, the rate-determining step is...

MDCAT Chemistry MCQ #998

  1. Question 1

    Q1. In a multi-step reaction, the rate-determining step is...

    • A) The step with the highest activation energy
    • B) The step with the lowest activation energy
    • C) The fastest step in the mechanism
    • D) The step producing the most reaction intermediates

    Answer: The step with the highest activation energy

    Explanation: The slowest step (highest activation energy) controls the overall rate. Option C is incorrect because fastest steps don't limit reaction rate.