Premium
The reaction of atomic oxygen and hydrogen with nitric acid
Author(s) -
Chapman C. J.,
Wayne R. P.
Publication year - 1974
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.550060502
Subject(s) - chemistry , chain reaction , autocatalysis , reaction rate constant , nitric acid , hydrogen atom , hydrogen , resonance fluorescence , photochemistry , reaction rate , oxygen , kinetic energy , fluorescence , oxygen atom , atom (system on chip) , kinetics , inorganic chemistry , catalysis , organic chemistry , molecule , physics , alkyl , quantum mechanics , computer science , embedded system
The reactions\documentclass{article}\pagestyle{empty}\begin{document}$$\begin{array}{*{20}c} {(1)} {{\rm O + HNO}_3 \to {\rm products}}\\ {(2)} {{\rm H + HNO}_{\rm 3} \to {\rm products}} \end{array}$$\end{document} have been studied in a discharge‐flow system. Kinetic studies were made using resonance fluorescence for the measurement of atom concentrations. Based on the rates of atom loss, the following upper limits were obtained for the rate constants:\documentclass{article}\pagestyle{empty}\begin{document}$$ k_1 \le 3 \times 10^{ - 17} {\rm cm}^{\rm 3} /{\rm molec - sec} $$\end{document}\documentclass{article}\pagestyle{empty}\begin{document}$$ k_1 \le 2 \times 10^{ - 15} {\rm cm}^{\rm 3} /{\rm molec - sec} $$\end{document} Observed reaction in the HHNO 3 system is at least partially due to an autocatalytic chain removal of both reactants. Diagnostic tests have suggested that OH, NO 2 , and NO 3 are the chain carriers.