RATES OF REACTION OF HYPOCHLORITE IONS WITH SULPHITE AND IODIDE IONS

Abstract

The rates of reaction of sodium hypochlorite with sodium iodide and sodium sulphite have been measured by means of a rapid-flow technique. The measurements were made over a range of temperature and hydroxide concentrations, and show that the actual slow steps of the reactions are [Formula: see text][Formula: see text]and[Formula: see text][Formula: see text]with time in seconds.The decomposition of hypoiodite ions was also measured.These results, and those for other reactions of hypochlorite ions, or hypochlorous acid, form a series similar to the reactions of peroxides. It is found that the regularities observed for peroxides apply to some extent to the present reactions, and other possible regularities are also examined.