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?

Question

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?

Philoid · Accepted Answer

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.2^1.5 = 2.82.Hence order with respect to A is 1.5.

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

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

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-10.200.200.40B/mol L-10.300.100.05r0/mol L-1s-15.07 × 10-55.07 × 10-51.43 × 10-4What is the order of reaction with respect to A and B?