Chemistry - Chemical Kinetics Question with Solution | TestHub

The following mechanism has been proposed for the reaction of $\mathrm{NO}$ with ${\mathrm{Br}}_2$ to form $\mathrm{NOBr}$ : $\mathrm{NO}(\mathrm{g})+{\mathrm{Br}}_2(\mathrm{g})\rightleftharpoons {\mathrm{NOBr}}_2(\mathrm{g})$ ${\mathrm{NOBr}}_2(\mathrm{g})+\mathrm{NO}(\mathrm{g})⟶2\mathrm{NOBr}(\mathrm{g})$ If the second step is the rate determining step, the order of the reaction with respect to $NO(g)$ is