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The kinetics of the bromate–sulfite reaction system

✍ Scribed by Lajos Szirovicza; Endre Boga

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
143 KB
Volume
30
Category
Article
ISSN
0538-8066

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✦ Synopsis

The kinetics of the reaction between BrO 3 Ϫ and sulfite was studied by measuring the concentrations of [Br Ϫ ] and [H ϩ ] both in buffered and in unbuffered solutions. A mechanism was applied for simulation of the experimental observations. Rate constants k ϭ 1 and were determined for the following reactions:

Rate constant k 1 was obtained directly from the experimental results on unbuffered reactions, where Reaction (1) was predominant. Rate constant k 2 was obtained by computer fitting of [Br Ϫ ] to the experimental values for buffered reactions, where the rate of Reaction (2) was about four times higher than that of Reaction (1).

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The detailed kinetics of the reaction of toluidine blue {phenothiazine-5-ium, 3amino-7(dimethylamino)-2-methyl chloride, tolonium chloride, with potassium bro-ϩ Ϫ TB Cl } mate and with aqueous bromine reaction were studied. In most of the experiments, the kinetics were monitored by following the rat