In a reaction between A and B, the initial rate of reaction (r_{0}) was measured for different initial concentrations of A and B as given below:

A/ mol L^{1}

0.20

0.20

0.40

B/ mol L^{1}

0.30

0.10

0.05

r_{0}/ mol L^{1}s^{1}

5.07 × 10^{5}

5.07 × 10^{5}

1.43 × 10^{4}

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

Answer 4.10:Let the order of the reaction with respect to A bexand with respect to B bey.

Therefore,

Dividing equation (i) by (ii), we obtain

Dividing equation (iii) by (ii), we obtain

= 1.496

= 1.5 (approximately)

Hence, the order of the reaction with respect to A is 1.5 and with respect to B is zero.

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