Thermodynamic excess properties of ionic solutions in the primitive MSA

Thermodynamic excess properties of ionic solutions in the primitive MSA 

The representation of the departures from ideality in ionic solutions has applications in various domains such as geochemistry, solution chemistry and chemical industry. It is useful for the design of absorption heat pumps or apparatus involved in desalination or nuclear wastes reprocessing. 

It is also an interesting information for the study of interfaces in presence of at least one bulk ionic solution. 

Because of its wide range of applications, the thermodynamic properties of electrolytes have been the subject of much interest even in recent literature [1, 2, 3]. Certainly, among physical chemists, the most popular expressions have been the Debye-Hiickel limiting laws (DHLL), and expressions derived therefrom [4]. Among others, geochemists, have used extensively Pitzer s modifications of DHLL to describe departures from ideality in concentrated ionic mixtures (typically up to 6 mol/kg [5], and up to 10-20 mol/kg, between 0 and 170°C, for solutions of volatile weak electrolytes [6]). Also solubilities of minerals in natural waters can be predicted accurately [7]. 

Pitzer s treatment is based on the DH theory. It uses the DHLL plus a virial type series correction. 

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