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Abstract:

Ionic association between Cu2+(aq) and SO42-(aq) has been studied in the temperature range (298 to 473) K using a spectrophotometric technique. Experiments were designed to minimize the contribution of other protolytic equilibria in solution. The values of the ionic association equilibrium constant at different temperatures and pressures were fitted to an appropiate equation that allows the calculation of the thermodynamic quantities for states close to the saturation line. Using Bjerrum's model for ionic association evidence for two ion pair populations was obtained. The process of ion pairing is discussed and a possibility to reconcile the continuum model (Bjerrum) with molecular simulation results is suggested. © 2004 Elsevier Ltd. All rights reserved.

Registro:

Documento: Artículo
Título:Ion pair formation in copper sulfate aqueous solutions at high temperatures
Autor:Méndez De Leo, L.P.; Bianchi, H.L.; Fernández-Prini, R.
Filiación:Unidad De Actividad Química, Comn. Nacional De Energía, Avenida del Libertador 8250, 1429 Ciudad de Buenos Aires, Argentina
Esc. De Ciencia Y Tecnología, Univ. Nac. General San Martín, Alem 3901, 1653 Villa Ballester, Argentina
INQUIMAE, Fac. De Ciencias Exactas Y Naturales, Univ. De Buenos Aires, Cd. Univ., Pabellón II, 1428 Ciudad de Buenos Aires, Argentina
Palabras clave:Aqueous solutions; Copper sulfate; Equilibrium association constant; High temperature; Electrolytes; Electrostatics; High temperature effects; Mathematical models; Permittivity; Positive ions; Relaxation processes; Solvents; Chemical potential; Copper sulfate; Equilibrium association constant; Multicharged electrolytes; Copper compounds
Año:2005
Volumen:37
Número:5
Página de inicio:499
Página de fin:511
DOI: http://dx.doi.org/10.1016/j.jct.2004.11.003
Título revista:Journal of Chemical Thermodynamics
Título revista abreviado:J Chem Thermodyn
ISSN:00219614
CODEN:JCTDA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219614_v37_n5_p499_MendezDeLeo

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Citas:

---------- APA ----------
Méndez De Leo, L.P., Bianchi, H.L. & Fernández-Prini, R. (2005) . Ion pair formation in copper sulfate aqueous solutions at high temperatures. Journal of Chemical Thermodynamics, 37(5), 499-511.
http://dx.doi.org/10.1016/j.jct.2004.11.003
---------- CHICAGO ----------
Méndez De Leo, L.P., Bianchi, H.L., Fernández-Prini, R. "Ion pair formation in copper sulfate aqueous solutions at high temperatures" . Journal of Chemical Thermodynamics 37, no. 5 (2005) : 499-511.
http://dx.doi.org/10.1016/j.jct.2004.11.003
---------- MLA ----------
Méndez De Leo, L.P., Bianchi, H.L., Fernández-Prini, R. "Ion pair formation in copper sulfate aqueous solutions at high temperatures" . Journal of Chemical Thermodynamics, vol. 37, no. 5, 2005, pp. 499-511.
http://dx.doi.org/10.1016/j.jct.2004.11.003
---------- VANCOUVER ----------
Méndez De Leo, L.P., Bianchi, H.L., Fernández-Prini, R. Ion pair formation in copper sulfate aqueous solutions at high temperatures. J Chem Thermodyn. 2005;37(5):499-511.
http://dx.doi.org/10.1016/j.jct.2004.11.003