(a) For a reaction , the rate is given by Rate =
(i) How is the rate of reaction affected if the concentration of is doubled ?
(ii) What is the overall order of reaction if is present in large excess ?
(b) A first order reaction takes 30 minutes for 50% completion. Calculate the time required for 90%
completion of this reaction.
(log 2 = 0.3010 (5 marks)