The accuracy of the theories based on statistical physics for the thermodynamic modeling of state parameters of dense pure gases (fluids)

A comparison of the accuracy of calculations of the parameters of the state of dense supercritical gases (fluids) using the equations of state (EOS), obtained using the three best one fluid theories HMSA/C, MRCSR and KLRR-T, based on the given potentials of intermolecular interactions and the laws of statistical mechanics is carried out. The best agreement of the calculated state parameters with Monte Carlo data was obtained for the EOS based on the HMSA/C and KLRR-T theories. (paper)