Phase diagram of argon: The prediction of the coexisting liquid and vapor densities of argon near the critical point

Sabrina Ladjama; Azzedine Abbaci

doi:10.1140/epjst/e2016-60219-9

EPJ

Phase diagram of argon: The prediction of the coexisting liquid and vapor densities of argon near the critical point

Sabrina Ladjama and Azzedine Abbaci^a

Laboratoire de synthèse et biocatalyse organique, Département de Chimie, Faculté des Sciences, Université Badji Mokhtar, B. P. 12, Sidi-Amar, Annaba (23200), Algeria

Received: 10 July 2016
Revised: 19 August 2016
Published online: 18 April 2017

Abstract

This work reports on the prediction of the liquid-vapor densities as well as the rectilinear diameter of argon in the vicinity of the critical region. A previously formulated equation of state (EOS) [A. Rizi, A. Abbaci, J. Mol. Liq. 171, 64 (2012)] based on the Landau-Ginzburg crossover formalism for argon is used for this purpose. We thus present a comparison of the crossover model equation of argon with the experimental phase equilibrium data and describe the singularity of the rectilinear diameter very close to the critical point. The obtained results show that percent deviations between the experimental data and the calculated rectilinear diameter from the crossover model do not exceed 0.05%.

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3-7 July 2023
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EPJ

Phase diagram of argon: The prediction of the coexisting liquid and vapor densities of argon near the critical point

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