The fraction of H2O2 decomposed after 25 min is — Chemical Kinetics Chemistry Question

💡 Solution & Explanation

From kt = ln(A0/At), 0.04606 × 25 = 1.1515. log(A0/At) = 1.1515 / 2.303 = 0.5. Given log 3.2 = 0.5, A0/At = 3.2 = 16/5. The fraction remaining is 5/16, so the fraction decomposed is 1 - 5/16 = 11/16. Therefore, correct answer is D.