After 20% completion, the rate of reaction: A → products, is 10 unit and after 80% completion, the r — Chemical Kinetics Chemistry Question

💡 Solution & Explanation

Rate R = k([A0](1-f))^n. R1 / R2 = ((1-0.2) / (1-0.8))^n = (0.8 / 0.2)^n = 4^n. Given R1 / R2 = 10 / 0.625 = 16. So, 4^n = 16, which means n = 2. Therefore, correct answer is C.