Thermodynamic Studies on Cobalt Complexes. V. On the Solubility and the Thermal Dissociation of Aquopentamminecobalt(III) Nitrate and Bromide, and on the Thermodynamic Stability of Monoacidopentamminecobalt(III) Complexes

Abstract

Abstract 1. By measuring the solubility and the dissociation pressure of aquopentamminecobalt-(III) nitrate, the standard free energy of formation of the salt and that of nitratopentamminecobalt(III) nitrate produced by the decomposition of the former in the solid state were determined. 2. In the same way the standard free energy of formation of aquopentamminecobalt(III) bromide and that of bromopentamminecobalt(III) bromide were determined. 3. On the basis of these results, the thermodynamic stabilities of three aquopentamminecobalt(III) complexes, several monoacidopentamminecobalt(III) complexes and their ions were determined.