R. Stryjek, ON THE PREDICTION OF THE GAS-LIQUID CRITICAL LOCUS WITH CUBIC EQUATIONS OF STATE, Bulletin of the Polish Academy of Sciences. Chemistry, 40(3), 1992, pp. 211-220
Seven cubic equations of state have been compared with regard to their
applicability to predict the gas-liquid critical state using paramete
rs taken from the vapour-liquid equilibrium data fit. The nitrogen + m
ethane and methane + n-decane systems have been chosen for the study.
For the former, the description of the critical state is satisfactory
to compare the models and the critical loci show a slight dependence o
n the model. For the latter, the predicted critical loci strongly depe
nd on the model used. On that example a great flexibility of cubic equ
ations of state in modelling of critical state is proved.