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Updated: Apr 8, 2026

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Published on: June 8, 2022
Compatible mechanism to characterize three independent but cross-coupled reactions of chlorite ion
István Nagypál1, Attila K Horváth2
1Department of Physical Chemistry, University of Szeged, Rerrich B. tér 1., H-6720 Szeged, Hungary.
Abstract:
Individually proposed kinetic models of the key subsystems of the chlorite-thiosulfate reaction, such as the hypochlorous acid-chlorite, tetrathionate-chlorite, and tetrathionate-chlorine dioxide reactions, have been unified to be able to describe all the main characteristics of these systems simultaneously. A complex 38-step kinetic model is composed in which the subsystems are coupled by the necessary short-lived intermediates and such species that is products or reactants in one system but transients in the other. Such a cross-coupling between the individual systems as well as the sound agreement between the measured and calculated absorbance-time profiles in 367 experimental curves strongly validates the proposed kinetic model.
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