This work presents a model for thermodynamic properties of the uni-univalent electrolytic solutions

based on a linear relation between a dimensionless-thermodynamic potential constructed for solvent

and a newly defined probability-distribution function of water molecules around the hydrated central

ion. The model allows quantitative reproduction of the osmotic coefficients for the uni-univalent

electrolytic solutions, especially some hydroxides of alkali metals and monoacids such as NaOH,

KOH, LiOH, HF, HCl, HBr, HI, HNO3 and H(HSO4), within experimental accuracy. A comparison is

made of the results of the presented model with the Pitzer’s equation. This paper also introduces an

alternative approach for the probability-distribution function, which makes the model be able to extend

to the single electrolyte solutions with various valent types.

**Author(s) Details**

**Zheng Fang
**Chemistry and Chemical Engineering College, Central South University, Changsha 410083, P.R. China

View Book :- http://bp.bookpi.org/index.php/bpi/catalog/book/217