Chemistry - Chemical Kinetics Question with Solution | TestHub

$2{\mathrm{N}}_2{\mathrm{O}}_5\to 4{\mathrm{NO}}_2+{\mathrm{O}}_2$ from the unit of rate constant it is clear that the reaction follow first order kinetics. Hence by rate law equation, $\mathrm{r}=k\left[{\mathrm{N}}_2{\mathrm{O}}_5\right]$ where $\mathrm{r}=1.02\times 10^{-4},k=3.4\times 10^{-5}$ $1.02\times 10^{-4}=3.4\times 10^{-5}\left[{\mathrm{N}}_2{\mathrm{O}}_5\right]$ $\left[{\mathrm{N}}_2{\mathrm{O}}_5\right]=3\mathrm{M}$