Annotation
A parameterized equation of state is suggested. It describes a part of the phase diagram in the region between the critical and supercritical isotherms up to densities equal to the critical density, within the experimental error. It is shown that this requires data on the position of the critical point and the second virial coefficient. The applicability of two-parameter potentials to description of this region is analyzed.
Received: 2013 November 21
Approved: 2014 May 23
PACS:
05.70.Ce Thermodynamic functions and equations of state
05.70.Jk Critical point phenomena
34.20.Gj Intermolecular and atom-molecule potentials and forces
64.10.+h General theory of equations of state and phase equilibria
05.70.Jk Critical point phenomena
34.20.Gj Intermolecular and atom-molecule potentials and forces
64.10.+h General theory of equations of state and phase equilibria
© 2016 Publisher M.V.Lomonosov Moscow State University
Authors
P.N. Nikolaev
Department of Physics, Moscow State University, Moscow, 119991, Russia
Department of Physics, Moscow State University, Moscow, 119991, Russia
Science News of the Faculty of Physics, Lomonosov Moscow State University
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