Chemistry - Chemical Kinetics Question with Solution | TestHub

The rate constant $k$, for the reaction $${\mathrm{N}}_2{\mathrm{O}}_{5(\mathrm{g})}\to 2{\mathrm{NO}}_{2(\mathrm{g})}+1/2{\mathrm{O}}_{2(\mathrm{g})}$$ is $2.3\times 10^{-2}{\mathrm{s}}^{-1}$. Which equation given below describes the change of $\left[{\mathrm{N}}_2{\mathrm{O}}_5\right]$ with time? ${\left[{\mathrm{N}}_2{\mathrm{O}}_5\right]}_0$ and ${\left[{\mathrm{N}}_2{\mathrm{O}}_5\right]}_t$ correspond to concentration of ${\mathrm{N}}_2{\mathrm{O}}_5$ initially and at time $t$.