For a chemical reaction represented by the overall equation , the experimentally observed rate law i — Chemical Kinetics Chemistry Question

💡 Solution & Explanation

The overall order is defined as the sum of powers in the rate law ($x+y$). Molecularity is only defined for elementary reactions, where it equals the sum of reacting molecules ($x+y = a+b$). For complex reactions, overall molecularity has no meaning. Exponents $x$ and $y$ are found experimentally.