Mass-Spectrometric Studies of Atomic Reactions. V. The Reaction of Nitrogen Atoms with NO2

Abstract

The reaction of N atoms with NO₂ has been studied in a fast flow system, using a mass spectrometer to monitor the composition of the reaction mixture. The rate constant for removal of NO₂ by N was found to be (1.8₅±0.2₂)×10⁻¹¹ cm³ molecule⁻¹·sec⁻¹. By a combined mass‐spectrometric and photometric method the relative contributions of the different primary reactions have been determined as follows (errors shown are standard deviations): $$\begin{array}{c}\mathrm{N}+{\mathrm{NO}}_2\to {\mathrm{N}}_2\mathrm{O}+\mathrm{O}\text{\hspace{0.17em}(0.43±0.04),}\\ \mathrm{N}+{\mathrm{NO}}_2\text{→2}\mathrm{NO}\text{\hspace{0.17em}(0.33±0.07),}\\ \mathrm{N}+{\mathrm{NO}}_2\to {\mathrm{N}}_2+{\mathrm{O}}_2\text{\hspace{0.17em}(0.10±0.12),}\\ \mathrm{N}+{\mathrm{NO}}_2\to {\mathrm{N}}_2\text{+2}\mathrm{O}\text{\hspace{0.17em}(0.13±0.11).}\end{array}$$