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A consensus view of the temperature dependence of the gas phase reaction: OH + HBr → H2O + Br

✍ Scribed by Veronica I. Jaramillo; Samuel Gougeon; Sébastien D. Le Picard; André Canosa; Mark A. Smith; Bertrand R. Rowe

Publisher
John Wiley and Sons
Year
2002
Tongue
English
Weight
178 KB
Volume
34
Category
Article
ISSN
0538-8066

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✦ Synopsis

Abstract

The temperature dependence of the rate coefficient for the reaction, OH + HBr has been reinvestigated at low temperatures (T = 48–224 K) by using uniform supersonic flow reactors with laser induced fluorescence detection. This paper presents two forms of global fits: k(T) = 1.11 × 10^−11^ (T/298)^−0.91^ cm^3^ s^−1^ and k(T) = 1.06 × 10^−11^ (T/298)^−1.09^ $\exp({-10.5 K\over T})$ cm^3^ s^−1^, both of which accurately describe the temperature dependence of the rate coefficient for the title reaction within the temperature range 20–350 K. These fits indicate that at temperatures below 200 K, the rate coefficient for this reaction shows inverse temperature dependence, while above 200 K the reaction shows insignificant temperature dependence. © 2002 Wiley Periodicals, Inc. Int J Chem Kinet 34: 339–344, 2002

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