The Solvation Thermodynamic Functions in the Mean Spherical Approximation (MSA): Behavior Near the Solvent Critical Region
Abstract
Explicit expressions of the MSA solvation thermodynamic functions, the Gibbs free energy, energy enthalpy, entropy, apparent molar heat capacities and partial molar volume are derived starting from the Helmholtz free energy. The thermodynamic consistency of the MSA solvation thermodynamic functions are discussed. Some limiting behaviors of the MSA solvation thermodynamic function are compared with the Born theory. The effect of explicit solvent structures in the MSA theory on the Gibbs and the Helmholtz free energy is given special attention. Model Calculations of alkali and halide ions in water are carried out and compared with experimental data. The apparent molar heat capacities at constant volume and pressure, and the partial molar volume are calculated along an isobaric line to the critical region of a dipolar liquid. A great deal of insight has been gained on the behavior of the solvation thermodynamic properties near the critical region of dipolar solvent. It helps to explain some of the recent experimental observations.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 04, 1994
- Accession Number
- ADA283040
Entities
People
- Dongqing Wei
- Lesser Blum
Organizations
- University of Puerto Rico