Department of Chemical Science and Technology, Faculty of Bioscience and Applied Chemistry, Hosei University, 3-7-2 Kajino-cho, Koganei, Tokyo 184-8584, Japan
Yuri YAMADA
Department of Chemical Science and Technology, Faculty of Bioscience and Applied Chemistry, Hosei University, 3-7-2 Kajino-cho, Koganei, Tokyo 184-8584, Japan
Published: May 26, 2012Received: December 22, 2011Available on J-STAGE: -Accepted: February 14, 2012
Advance online publication: June 06, 2012
Revised: -
Three-phase equilibrium in argon was obtained based on the thermodynamics of a perfect solid and liquid. The equation of state (EOS) for a perfect solid was previously obtained from the study of a pure substance with spherical molecules. The EOS for a perfect liquid is a van der Waals EOS with suitable coefficients to explain 3-phase equilibrium. The Lennard-Jones parameters for argon are applied to these EOSs. Thep-V-Trelations on the equilibrium lines are comparable with experimental and molecular simulation results. The calculated values of the average potential energy and entropy are also consistent with the simulations.
