CHEMISTRY · Single correct · A Level · Chemistry · Kinetics · Kinetics
Problem
For a reaction at 298 K, the uncatalyzed pathway has an activation energy of 80 kJ·mol⁻¹, whereas the catalyzed pathway has an activation energy of 50 kJ·mol⁻¹. Assuming the pre-exponential factor A is the same for both pathways, which of the following is closest to the ratio k_cat⁄k_uncat of their rate constants?
(a) 4×103
(b) 2×105
(c) 3×107
(d) 1×102