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?


(i) Order is power raised to reactant in rate law, hence,

Rate = k[A][B]2


(ii) When the concentration of B is increased three times then the rate is affected by the square of reactant. The rate is increased by 9 Times.


(iii) When concentration of reactant both A and B is doubled then the rate will have affected as square of reactant B and Two times of Reactant A. Overall increase in rate is 8 times


(i) When the concentration of B is increased by three times, the rate is increased by nine times.


(ii) When conc. of both reactants doubled then Rate increased 8 times.


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