Autocatalysis and self-inhibition: coupled kinetic phenomena in the chlorite-tetrathionate reaction |
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Authors: | Horváth Attila K Nagypál István Peintler Gábor Epstein Irving R |
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Institution: | Department of Phsyical Chemistry, University of Szeged, Szeged P.O. Box 105, H-6701, Hungary. |
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Abstract: | The initial rate of formation of chlorine dioxide in the chlorite-tetrathionate reaction changes in an unusual fashion. The formal kinetic order of both reactants varies over a very wide range. Moreover, chlorite ion behaves not just as a simple reactant, but also as a self-inhibitor. A five-step scheme, derived from an eight-step mechanism, is proposed in which the autocatalytic formation of HOCl plays a central role in accounting for this kinetic behavior. |
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