MDCAT Chemistry MCQ #5154

For the reaction 2NO + O2 → 2NO2, the rate law is given by rate = k[NO]^2[O2]. What is the order of this reaction?

MDCAT Chemistry MCQ #5154

  1. Question 1

    Q1. For the reaction 2NO + O2 → 2NO2, the rate law is given by rate = k[NO]^2[O2]. What is the order of this reaction?

    • A) 1
    • B) 2
    • C) 3
    • D) 4

    Answer: 3

    Explanation: The reaction is third-order because the sum of the exponents in the rate law is 3. Option B is incorrect because it only considers the exponent of one reactant.