A reaction is first order in A and second order in B.
(i) Write the differential rate equation.
(ii) How is the rate affected on increasing the concentration of B three times ?
(iii) How is the rate affected when the concentrations of both A and B are doubled ?

Explanation

(i) `(dx)/(dt) = k[A]^(1) [B]^(2)`
(ii) If concentration of .B. is tripled, then the rate will become 9 times.
(iii) When concentration of both A and B are doubled, then the rate will become 8 times.