The influence of electrolytic dissociation upon rates of reactions. Part IV. The aquation of chloropentamminechromium(III) in acidic salt solutions

Abstract

The rate of aquation of chloropentamminechromium(III) is accelerated by nitrate, sulphate, malonate, phthalate, and tartrate solutions. These effects are ascribed to the more reactive ion-pairs and their rate constants have been calculated by applying the Wyatt–Davies treatment. These rate constants are broadly related to the dissociation constants of the ion-pairs (obtained for the dicarboxylates by a glass electrode–calomel cell) but this relationship is only approximate.