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Activity Coefficients and Gibbs Energies of Transfer of Hexaamminecobalt(lll) Hexacyanoferrate(lll)

V. Holba and M. Hanková

Department of Physical Chemistry, Faculty of Natural Sciences, Comenius University, SK-842 15 Bratislava

 

Abstract: The solubility of hexaamminecobalt(III) hexacyanoferrate(III) was measured in aqueous and aqueous-methanolic solutions of NaClO4. The experimental mean activity coefficients, evaluated from these measurements are compared with those calculated with the aid of extended Debye-Hückel relations. From their temperature dependence the partial molar enthalpy and partial molar heat capacity have been obtained. The data on solubility in water-methanol mixtures served for the evaluation of Gibbs energies of transfer.

Full paper in Portable Document Format: 485a310.pdf

 

Chemical Papers 48 (5) 310–312 (1994)

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