Thermodynamic consistency of vapor pressure and calorimetric data for argon, krypton, and xenon
Abstract
A new two-parameter vapor pressure equation has been derived which, unlike the Salter equation, is shown to be equally applicable to quantum or classical solids and even liquids. The condensed phase enthalpies and entropies are given directly by the fitted parameters with accuracies comparable to those which have been claimed for existing independent calorimetric measurements. Recent vapor pressure data for the solid and liquid phases of argon, krypton, and xenon are analyzed in this manner, and the results are compared with the available calorimetric data. New values for the cohesive energy at T=0 are also derived for these substances.
- Publication:
-
Journal of Chemical Physics
- Pub Date:
- May 1977
- DOI:
- 10.1063/1.433701
- Bibcode:
- 1977JChPh..66.4493S
- Keywords:
-
- Argon;
- Heat Measurement;
- Krypton;
- Thermodynamic Equilibrium;
- Vapor Pressure;
- Xenon;
- Enthalpy;
- Entropy;
- Gibbs Free Energy;
- Liquid Phases;
- Sublimation;
- Thermodynamics and Statistical Physics;
- 64.70.Fx;
- 65.50.+m;
- Liquid-vapor transitions