Collect. Czech. Chem. Commun. 1981, 46, 2503-2508
https://doi.org/10.1135/cccc19812503

Kinetics of oxidation of hypophosphitopentamminechromium(III) ion with periodate

Olga Volárová and Vladislav Holba

Department of Physical Chemistry, Comenius University, 816 31 Bratislava

Abstract

The kinetics of oxidation of hypophosphitopentamminechromium(III) ion with periodate was investigated as a function of the temperature, ionic strength, and concentration of perchloric acid. The reaction rate decreased with increasing ionic strength and concentration of perchloric acid. The redox reaction proper involving transfer of an oxygen atom is preceded by dissociation of hydrogen from the coordinated hypophosphite. The reactivity of the latter is compared with that of the free hypophosphite.