Ion pair formation in copper sulfate aqueous solutions at high temperatures

Autor:	Hugo Bianchi, Roberto Fernández-Prini, Lucila P. Méndez De Leo
Rok vydání:	2005
Předmět:	Aqueous solution Chemistry Ion pairing Inorganic chemistry Ionic bonding Thermodynamics Molecular simulation Copper sulfate Ion pairs Atmospheric temperature range Atomic and Molecular Physics and Optics General Materials Science Physical and Theoretical Chemistry Equilibrium constant
Zdroj:	The Journal of Chemical Thermodynamics. 37:499-511
ISSN:	0021-9614
DOI:	10.1016/j.jct.2004.11.003
Popis:	Ionic association between Cu2+(aq) and SO 4 2 - ( 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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ca9eb45cf8bc80643cb94e949a0b11ef https://doi.org/10.1016/j.jct.2004.11.003 Zobrazit plný text záznamu Full Text from ScienceDirect