The order of reaction is — Chemical Kinetics Chemistry Question

💡 Solution & Explanation

The ratio of remaining concentrations (proportional to KMnO4 volume) for equal time intervals is constant: 25.6/16.0 = 1.6 and 16.0/10.0 = 1.6. A constant ratio over equal time intervals characterizes a first-order reaction. Therefore, correct answer is A.