MDCAT Chemistry MCQ #5101

The mechanism for 2NO2 + F2 -> 2NO2F is: NO2 + F2 -> NO2F + F (slow). What is the order of reaction with respect to F2?

MDCAT Chemistry MCQ #5101

  1. Question 1

    Q1. The mechanism for 2NO2 + F2 -> 2NO2F is: NO2 + F2 -> NO2F + F (slow). What is the order of reaction with respect to F2?

    • A) Second order with respect to NO2
    • B) Zero order with respect to F2
    • C) First order with respect to F2
    • D) Third order overall

    Answer: First order with respect to F2

    Explanation: The slow step involves one molecule of NO2 and one of F2. Option A is tempting but ignores the specific mechanism provided.