Read the Assertion and Reason below and choose the correct option. — Chemical Kinetics Chemistry Question

💡 Solution & Explanation

The overall order of a complex chemical reaction cannot be reliably deduced solely from its balanced stoichiometric equation; it must be determined experimentally. The assertion is therefore false. However, the reason is true, as the rate constant units for a third-order reaction are indeed L^2 mol^-2 s^-1 (or M^-2 s^-1). Therefore, correct answer is D.