Which of the following statements is/are correct regarding the rate of a chemical reaction? — Chemical Kinetics Chemistry Question

💡 Solution & Explanation

A is correct as instantaneous rate $= \pm dc/dt$. B is incorrect because rate generally decreases as reactant concentration decreases. C is correct as average rate $= \pm \Delta c/\Delta t$. D is correct because for zero-order, the rate is constant throughout, so the average rate equals the instantaneous rate.