Question Detail
Question
The equation for the reaction between NO and O₂ is given below 2NO + O₂ → 2NO₂. What is the order of the reaction if the rate law is k [NO][O₂]²?
Correct Answer
Option B is the correct answer.
Detailed Explanation
The overall order is the sum of the exponents in the rate law. Here, 1 (from [NO]) + 2 (from [O₂]²) = 3, so it is third order overall.
Hint
Add the exponents of the concentration terms in the rate law.