The production of NO3 in the photolysis of nitrogen dioxide and of nitric acid vapour under isothermal conditions
D. Husain, Ronald George Wreyford Norrish
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Published: May 7, 1963
DOI: 10.1098/rspa.1963.0081
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Abstract The NO3 radical has been observed as a result of the flash photolysis of nitrogen dioxide under isothermal conditions (room temperature). Its concentration has been m easured together with the rate constant for the reaction NO + NO3 = 2NO2. This has been found to be in quantitative agreement with previous kinetic measurements on the straight photolysis of nitrogen dioxide. The flash photolysis of nitric acid vapour under isothermal conditions also yielded NO3 as an intermediate. The basis of a mechanism is reported. The NO3 results from the reaction OH + HNO3 = H2O + NO3, for which the rate constant has been measured.
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