Two elementary reactions, P and Q, have identical collision frequencies and molecular orientations. At 298 K their activation energies are 50 kJ mol⁻¹ for P and 60 kJ mol⁻¹ for Q. Using R=8.31J mol−1K−1, which value is closest to the ratio kP/kQ at 298 K?
a) 4
b) 60
c) 10
d) 1