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  • 1
    ISSN: 1572-8927
    Keywords: Copper ; chloride solutions ; stability constants ; activity coefficients ; liquid-liquid extraction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract A model combining formation of cupric chlorocomplexes and deviations to ideality in electrolyte solutions is proposed for the representation of ther-modynamic properties of concentrated cupric chloride solutions at 25°C in the presence of other ions (Na+, Li+, Mg2+, H+ or SO 4 2− ). A set of equilibrium constants for the formation of cupric chlorocomplexes is obtained. The equation for the calculation of activity coefficients, using a modified Pitzer expression, yields not only the composition of CuCl2 solutions at various experimental conditions, but also the activities for each species. The model represents, with a mean accuracy of 1.2%, a large number of spectrophotometric, as well as osmotic data. It was applied to the extraction of Copper (II) from chloride aqueous solutions by LIX 65N in ESCAID 100 solvent. In this case, the accuracy of the representation (4%) is consistent with the estimated experimental error.
    Type of Medium: Electronic Resource
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