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Kinetics of the reactions of hydrogen iodide with hydroxyl and nitrate radicals

โœ Scribed by I.T. Lancar; A. Mellouki; G. Poulet

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
426 KB
Volume
177
Category
Article
ISSN
0009-2614

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โœฆ Synopsis

The reactions of HI with OH and NO3 have been studied in discharge-flow reactors coupled to EPR and mass spectrometry for analysis, The rate constants for the reactions HI+OH+H20 t I (1) and HI t NO3 +HNO, t I (2) were determined al 298 K: k,=(3.3+0.2)xlO-" and kz = (2.5f0.8) X 10 --IS cm3 molecule-' s-i. Further measurements of k2 over the temperature range 298-373 K yielded the expression k2 = 1.3 x lo-" exp [ ( -1830 k 300) /T] cm' molecule-' s-'. The results for reaction (1) are compared with earlier literature data; those for reaction (2) are the first ones.

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