Chapter 21, Problem 52QP

The gas-phase decomposition of peroxyacetyl nitrate (PAN) obeys first-order kinetics:

${\text{CH}}_{\text{2}}{\text{COOONO}}_{\text{2}}\to {\text{ CH}}_{\text{2}}{\text{COOO + NO}}_{\text{2}}$

with a rate constant of $\text{4}\text{.9 }\times {\text{ 10}}^{\text{-4}}{\text{S}}^{\text{-1}}.$ Calculate the rate of decomposition (in M/s) if the concentration of PAN is 0.55 ppm by volume.

Assume STP conditions.