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Absolute rate constants for the reactions O(3P) atoms with HCl and HBr

✍ Scribed by Raymond D. H. Brown; Ian W. M. Smith

Publisher: John Wiley and Sons
Year: 1975
Tongue: English
Weight: 728 KB
Volume: 7
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550070211

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✦ Synopsis

Abstract

A flow tube method has been used to determine rate constants for the elementary reactions:
equation image
Oxygen atoms were produced by adding a small excess of NO to a stream of partially dissociated nitrogen, and their reaction with hydrogen halide was monitored by observing the intensity of the NO + O afterglow. Experiments were carried out at temperatures from 293 to 440°K with HCl, and from 267 to 430°K with HBr. The role of secondary reactions was minimised and the residual effects were allowed for. The rate constants for the primary reactions could be matched by Arrhenius expressions:

where the units are cm^3^/molec·sec and the errors correspond to a standard deviation.

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