The order of the reaction A → P is 2 when the concentration of A is small. However, at higher concentrations of A, the order changes to 1. The mechanism of the reaction is
[Assume that steady state approximation can be applied on A*]
1
A → P
2
A \(\rightleftharpoons\) A*
A* → P
3
A + A \(\rightleftharpoons\) A* + A
A* → P
4
A + A → A* + A
A* → P