Vapor-Liquid Equilibrium Relations in the Critical Region

Liquid - Vapor Equilibrium/Distillation

Background The volatility of a compound is its ability to change into a vapor, or to evaporate at a particular temperature and pressure. The normal boiling point of a liquid usually allows comparison of its volatility to other materials, with lower boiling points indicating greater volatility, but this may be affected somewhat by the presence of other materials. Comparison of the concentration ...

Liquid-Vapor Density of Sulfur Hexaf luoride in the Critical Point

The thermodynamic properties of fluids can be predicted using the global equations of state. Among these thermodynamic properties of fluids, we choose the densities of the liquid and vapor phases. This paper considers the application of the crossover model to the vapor-liquid rectilinear diameter of sulfurhexafluoride. We also present a comparison of the crossover model equation with ...

Some thermodynamic relations at the critical point in liquid-vapor systems.

The relation of the symmetry of the thermodynamic functions with respect to the critical density rho(c) to the analyticity of the chemical potential above the critical temperature is discussed with the aid of thermo-dynamic considerations. Special consideration is given to the differential coefficients ([unk](2)mu/[unk]T(2))rho and ([unk](2)P/[unk]T(2))rho. The discussion is extended to the two...

Thermodynamic Relations for Testing Consistency of Ternary Vapor-liquid Equilibrium Data*

Vapor-liquid equilibrium relationships are important properties for practical use, such as in the design and operation of distillation equipment. In general, vapor-liquid equilibrium relations are determined experimentally, and it is a custom to test the thermodynamic consistency of the equilibrium data. Investigators1^4-15'17'19~22-24) have proposed various methods for testing thermodynamic co...

Gibbs ensemble simulation of liquid-vapor equilibrium in quantum neon