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.