Revisiting the Kinetics and Mechanism of the Tetrathionate-Hypochlorous Acid Reaction in Nearly Neutral Medium

Denes Varga; Attila K. Horvath

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Revisiting the Kinetics and Mechanism of the Tetrathionate-Hypochlorous Acid Reaction in Nearly Neutral Medium

机译：重温近中性介质中四硫代-次氯酸反应的动力学和机理

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The tetrathionate-hypochlorous acid reaction has been investigated in nearly neutral medium at I ) 0.5 M ionic strength and T ) 25.0 ( 0.1 °C in dihydrogen-phosphate-hydrogen-phosphate buffer by UV-vis spectrophotometry. In excess of hypochlorous acid, the stoichiometry was found to be S4O6 2- + 7HOCl + 3H2O f 4SO4 2 - + 7Cl- + 13H+, but in excess of tetrathionate colloidal sulfur precipitates. On the basis of the simultaneous evaluation of the kinetic curves, a nine-step kinetic model with four fitted and five fixed rate coefficients is proposed. Analogous oxidation reactions of tetrathionate are also compared and discussed.

机译：在紫外-可见分光光度法中，在接近中性的介质中（I）0.5 M离子强度和T）25.0（0.1°C）在磷酸二氢盐-磷酸氢盐缓冲液中研究了四硫酸盐-次氯酸反应。化学计量为S4O6 2- + 7HOCl + 3H2O f 4SO4 2-+ 7Cl- + 13H +，但过量的四硫酸盐胶态硫沉淀，在同时评估动力学曲线的基础上，建立了一个九步动力学模型。提出了四个拟合系数和五个固定速率系数，并对四硫酸盐的类似氧化反应进行了比较和讨论。

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《The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory》 |2009年第50期|共6页
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Denes Varga; Attila K. Horvath;
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Revisiting; Mechanism; Medium;

机译：重访;机制;中等;

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1. Revisiting the Kinetics and Mechanism of the Tetrathionate-Hypochlorous Acid Reaction in Nearly Neutral Medium [J] . Denes Varga, Attila K. Horvath The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory . 2009,第50期

机译：重温近中性介质中四硫代-次氯酸反应的动力学和机理
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Revisiting the Kinetics and Mechanism of the Tetrathionate-Hypochlorous Acid Reaction in Nearly Neutral Medium

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