Apparent molar volumes and heat capacities of aqueous magnesium chloride and cadmium chloride at temperatures from 278.15 K to 393.15 K at the pressure 0.35 MPa: a comparison of ion–ion interactions - Université Clermont Auvergne Accéder directement au contenu
Article Dans Une Revue Journal of Chemical Thermodynamics Année : 2000

Apparent molar volumes and heat capacities of aqueous magnesium chloride and cadmium chloride at temperatures from 278.15 K to 393.15 K at the pressure 0.35 MPa: a comparison of ion–ion interactions

Résumé

Apparent molar volumes Vφand apparent molar heat capacitiesCp, φ were determined for aqueous solutions of magnesium chloride (MgCl2) and cadmium chloride (CdCl2) at molalities m = (0.01 to 1.0)mol · kg − 1, at T = 278.15 K to T = 393.15 K, and at the pressure 0.35 MPa. Apparent molar volumes were calculated from densities obtained using a vibrating-tube densimeter. Apparent molar heat capacities were obtained using a twin fixed-cell, power-compensation, differential-output, temperature-scanning calorimeter. These results were used to create the surfaces (Vφ, m, T) and (Cp, φ,m , T) which were fitted by regression. Differences in ion–ion interactions for MgCl2(aq) and CdCl2(aq) are observed by comparison of the regression surfaces.

Dates et versions

hal-00560882 , version 1 (31-01-2011)

Identifiants

Citer

T. G. Call, Karine Ballerat-Busserolles, Luisa Origlia, Todd D. Ford, Earl M. Woolley. Apparent molar volumes and heat capacities of aqueous magnesium chloride and cadmium chloride at temperatures from 278.15 K to 393.15 K at the pressure 0.35 MPa: a comparison of ion–ion interactions. Journal of Chemical Thermodynamics, 2000, 32, pp.1525-1538. ⟨10.1006/jcht.2000.0697⟩. ⟨hal-00560882⟩
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