Description of dilution enthalpies and heat capacities for aqueous solutions within the MSA–NRTL model with ion solvation
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- 作者：Jean-Pierre Simonin ; Olivier Bernard ; Nicolas Papaiconomou ; Werner Kunz
- 关键词：Electrolyte ; Nonelectrolyte ; Osmotic coefficient ; Dilution enthalpy ; Heat capacity
- 刊名：Fluid Phase Equilibria
- 出版年：2008
- 出版时间：1 March 2008
- 年：2008
- 卷：264
- 期：1-2
- 页码：211-219
- 全文大小：571 K
文摘
The capability of the MSA–NRTL model to describe heat effects for binary aqueous electrolyte and nonelectrolyte solutions, with a relatively reduced number of parameters, is examined. The thermodynamic properties described include the osmotic coefficient, ![]()
, the apparent relative molar enthalpy, ΦL, and the apparent molar heat capacity, ΦCP. The MSA–NRTL model consists of the mean spherical approximation (MSA) for the long-range electrostatic contribution to the Gibbs energy (for ionic solutions) and a local composition model, the non-random two-liquid (NRTL) model for the short-range contribution.