Chemistry

Problem

For a certain elementary reaction the activation energy is

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