1/K * dK/dT = 1.25 × 10^6 / T^3 K^-1. Correct statement(s): — Chemical Kinetics Chemistry Question

💡 Solution & Explanation

Since E_a/RT^2 = 1.25e6/T^3 => E_a = 1.25e6*R/T. (a) At 250 K: E_a = 5000*R = 10 kcal/mol (correct). (b) At 2000 K: E_a = 625*R = 1.25 kcal/mol (correct). (c) As T decreases, dK/dT increases (correct). (d) d(lnK)/dT at 1000 K = 1.25e6/1e9 = 1.25e-3, not 0.625 (incorrect).