(a) A reaction is second order in A and first order in B.(i) Write the differential rate equation,(ii) How is the rate affected on increasing the concentration of A three times?(iii) How is the rate affected when the concentrations of both A and B are doubled?(b) A first order reaction takes 40 minutes for 30% decomposition. Calculate t1/2 for this reaction. (Given log 1.428 = 0.1548)

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