Question

calculate the activation energy, a , in kilojoules per mole for a reaction at 65.0 ∘c that has a rate constant of 0.295 s−1 and a frequency factor of 1.20×1011 s−1

Answer 1

k = Ae-E/RT so, rearranging we get E = -RTln(k/A)

Now, plug in, taking care to express T in Kelving and, if R = 8.314 J/mole-K, then you have to convert to KJ by dividing your result by 1000 J/kJ in order to get kJ/mole.