Question Detail
Question
What is the order of reaction for X + Y → Products?
Correct Answer
Option D is the correct answer.
Detailed Explanation
The order cannot be determined from the stoichiometric equation alone; it must be determined experimentally. While the molecularity is 2, the order could be 0, 1, 2, or even fractional depending on the mechanism.
Hint
Order is experimental, molecularity is theoretical for an elementary step.