Article
Thermophysical Properties of Materials
2004. V. 42. № 3. P. 396–400
Fakhretdinov I.A., Zhdanov E.R.
Tait's equation of state for liquid mixtures
Annotation
The methods of statistical theory of liquid state are used to validate the well-known Tait's equation of state for liquid mixtures. An expression is derived which relates the coefficients A and B Tait's equation of state to the parameters of steepness of repulsion forces mα,β and to the thermodynamic properties of the system. P–V–T–x measurements for a water-acetone system are performed to check the theoretical results. The method of molecular dynamics is used to calculate the parameters of steepness of repulsion forces of a water-acetone mixture at different temperatures and concentrations. It is demonstrated that mα,β in the treated ranges of temperature and pressure assumes a constant value of 15. The theoretically obtained coefficient A coincides with the experimentally obtained value within the experimental error, and the coefficient B describes qualitatively correctly the temperature and concentration dependences obtained as a result of P–V–T–x measurements.
Article reference:
Fakhretdinov I.A., Zhdanov E.R. Tait's equation of state for liquid mixtures, High Temp., 2004. V. 42. № 3. P. 396
Fakhretdinov I.A., Zhdanov E.R. Tait's equation of state for liquid mixtures, High Temp., 2004. V. 42. № 3. P. 396