Question Detail
Question
For the elementary reaction 2NO₂ → N₂O₄, the order of the reaction is:
Correct Answer
Option C is the correct answer.
Detailed Explanation
For an elementary reaction, the order is equal to the molecularity. Since the reaction involves two molecules of NO₂, it is a bimolecular elementary step and is second order overall.
Hint
The rate law for an elementary step can be written directly from its stoichiometry.