Chemistry - Chemical Kinetics Question with Solution | TestHub

For the reaction, $2{\mathrm{NO}}_2+{\mathrm{F}}_2\to 2{\mathrm{NO}}_2\mathrm{F}$, following mechanism has been provided. $$\begin{array}{rl}& {\mathrm{NO}}_2+{\mathrm{F}}_2\stackrel{\text{ Slow }}{⟶}{\mathrm{NO}}_2\mathrm{F}+\mathrm{F}\\ & {\mathrm{NO}}_2+\mathrm{F}\stackrel{\text{ Fast }}{⟶}{\mathrm{NO}}_2\mathrm{F}\end{array}$$ Thus, rate expression of the above reaction can be written as