In a reaction between A and B, the initial rate of reaction(r0)was measured for different initial concentrations of A and B are given below:


A/mol L-1



0.20



0.20



0.40



B/mol L-1



0.30



0.10



0.05



r0/mol L-1s-1



5.07 × 10-5



5.07 × 10-5



1.43 × 10-4



What is the order of reaction with respect to A and B?


When concentration of B is changed then rate of reaction doesn't change that means order with respect to B is 0. But when the concentration of A is doubled rate increased by 2.82 times i.e.21.5 = 2.82.Hence order with respect to A is 1.5.


Order with respect to A and B is 1.5 and 0 respectively.


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