Etude cinétique de la réaction de Bray
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The rate of iodine formation, the maximum concentration reached during a period, the rate of iodine decomposition and the minimum concentration reached have been measured. These values have been correlated with the concentrations of iodate (near constant) of hydrogen peroxide (measured calorimetrically in samples taken during the oscillations) and of iodide (measured with an Orion selective electrode).
The results obtained are discussed according to a kinetic scheme based on the mechanism of the iodate-iodide-iodine reaction. This mechanism has been completed with the reactions of hydrogen peroxide as simply as possible in order to explain the origin of the oscillations without introducing unrelated complications.
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- 3.D.O. Cooke, Prog. Reaction Kinetics 8 (3), 185 (1977)Google Scholar
- 5.G. Schmitz, J. Chim. Phys. Chim. Biol. 71, 689 (1974)Google Scholar
- 8.A.D. Pethybridge et J.E. Prue, Trans. Faraday Soc. 63, 2019(1967)Google Scholar
- 11.A. Skrabal, Z. Elektrochem. 40, 232 (1934)Google Scholar
- 13.J. Sigalla, J. Chim. Phys. Biol. 55, 758 (1958)Google Scholar
- 14.A.F.M. Barton et G.A. Wright, J. Chem. Soc. A, 2096 (1968)Google Scholar