ChemInform Abstract: Kinetics and Mechanisms of Aqueous Ozone Reactions with Bromide, Sulfite, Hydrogen Sulfite, Iodide, and Nitrite Ions.
Abstract
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ChemInform Abstract
Stopped-flow and pulsed-accelerated-flow techniques indicate that the reactions of aqueous O3 with Br-, HSO3-, I-, and NO2- are first order both in the concentration of O3(aq) and the concentration of each anion. Ab initio calculations reveal possible structures of O3 adducts with the title anions, proposed as steady-state intermediates. Temperature dependencies of the reactions of Br- and HSO3- with O3 in acidic solutions are determined from 1 to 25 °C. These kinetics are important in studies of annual ozone depletion in the Arctic troposphere at polar sunrise.
