The time (in minutes) required for the decomposition to be half completed is — Chemical Kinetics Chemistry Question

💡 Solution & Explanation

The rate constant k = (1/10) ln(25.6/16.0) = (1/10) ln(1.6) = (2.303/10) log(16/10) = 0.2303 × (4 log 2 - 1) = 0.2303 × (1.2 - 1) = 0.04606 min^-1. The half-life t1/2 = 0.693 / k = 0.693 / 0.04606 = 15.0 min. Therefore, correct answer is C.