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First maximum of the iodide concentration in the Bray-Liebhafsky reaction

par Lolar-Anic, Lj;Stanisavljev, Dragomir;Krnajski Belovljev, G.;Peeters, Philippe ;Anić, Slobodan
Référence Computers and Chemistry, 14, 4, page (345-347)
Publication Publié, 1990

Article révisé par les pairs

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Résumé :

There are processes in chemical kinetics which, at present, cannot be elucidated in any other way except by comparative analysis between experimental observations and their numerical simulations. This is the case with the Bray-Liebhafsky oscillatory reaction of hydrogen peroxide decomposition. Thus, in the authors' experimental investigation of this reaction it was noticed that the time of appearance of the first maximum of the iodide concentration depends on the initial concentration of hydrogen peroxide in a somewhat unexpected manner. The position of the maximum depends on its rate constant together with the rate constants of other reactions, and also on the ratio between the initial concentrations of the participants in the reaction. In the numerical calculations, the eventual saturation of the solution by oxygen has been taken into account.