Question B4.
(a) For the reaction:
N2O5 -> 2NO2 + 1/2 O2
Calculate the rate constant, k, for the first order decomposition of N2O5, if the half-life of N2O5 at that temperature is 4.03 x 10^4 s.
(b) The decomposition of NH2OH, in the presence of oxygen, follows the rate expression,
rate = kobs[NH2OH][O2]
where kobs = 0.237 x 10^-4 L mol^-1 s^-1 at 0 °C.
It is found that kobs rises to 2.64 x 10^-4 L mol^-1 s^-1 when the temperature is 25 °C.
Calculate the activation energy, Ea, for this reaction.