The Solubility of Ozone and Kinetics of Its Chemical Reactions in Aqueous Solutions of Sodium Chloride

被引：25
|
作者：
Levanov, A. V. [1 ]
Kuskov, I. V. [1 ]
Antipenko, E. E. [1 ]
Lunin, V. V. [1 ]
机构：
[1] Moscow MV Lomonosov State Univ, Fac Chem, Moscow 119992, Russia
来源：
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2008年 / 82卷 / 12期
关键词：
D O I：
10.1134/S0036024408120133
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The solubility of ozone and the kinetics of its decomposition and interaction with chloride ions in a 1 M aqueous solution of NaCl at 20 degrees C and pH 8.4-10.8 were studied. The ratio between the concentration of O(3) in solution and the gas phase was found to be 0.16 at pH 8.4-9.8. The concentration of dissolved ozone decreased sharply as pH increased to 10.8 because of a substantial increase in the rate of its decomposition. It was observed for the first time that the interaction of O(3) with Cl(-) in alkaline media resulted in the formation of chlorate ions. The dependence of the rate of formation of ClO(3)(-) on pH was determined; its maximum value was found to be 9.6 x 10(-6) mol l(-1) min(-1) at pH 10.0 and the concentration of ozone at the entrance of the reactor 30.0 g/m(3). A spectrophotometric method for the determination of chlorate ions (concentrations 1 x 10(-5) - 3 x 10(-4) M) in aqueous solutions was suggested.
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页码：2045 / 2050
页数：6
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