Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): For a zero-order reaction, the unit of the rate constant is identical to the unit of the rate of reaction. Reason (R): For a zero-order reaction, the rate of reaction is directly proportional to the concentration of the reactants. In the light of the above statements, choose the most appropriate an

Step-by-step solution

Assertion (A) is correct: The unit of the rate of reaction is always mol L ⁻¹ s ⁻¹ . For a zero-order reaction, the rate equation is Rate = k[ Reactant ]^0 = k . Since the concentration term becomes 1 , the unit of the rate constant k is exactly the same as the unit of the rate of reaction, which is mol L ⁻¹ s ⁻¹ . Reason (R) is not correct: By definition, a zero-order reaction is one wherein the rate of the reaction is independent of the concentration of the reactants. It is not directly proportional to the concen