Mutual Catalysis in the Chromium(III)–EDTA–Hydrogen Peroxide System

Abstract Hydrogen peroxide catalyzes the reaction between hexaaquachromium(III) and ethylenediaminetetraacctic acid, while chromium(III)–EDTA complex accelerates the decomposition of hydrogen peroxide. A mechanism is suggested for the reaction on the basis of gasvolumetric and spectrophotometric experiments.