For a certain elementary reaction the activation energy is

CHEMISTRY · Single correct · CBSE · Chemistry · Chemical Kinetics · Chemical Kinetics

Problem

80.0\,\text{kJ mol}^{-1}

. Assuming the pre-exponential factor is temperature-independent, what is the approximate ratio

k_{318}/k_{298}

of the rate constants at 318 K and 298 K, respectively? (Gas constant

R=8.314\,\text{J mol}^{-1}\text{K}^{-1}

.) (a) 4 (b) 12 (c) 8 (d) 1.1