Thermodynamic Properties of One-Component Systems with Pair Two-Parameter Interaction Potentials

One-component systems with the simplest pair model interparticle interaction potentials are considered. The equations of state are obtained, and the relationship between the critical parameters of each system and the parameters of the interaction potentials is established. The lines of the phase equilibrium are constructed, and the values of isobaric heat capacity are found in a wide temperature and pressure interval (with maxima in the supercritical region). The obtained results are compared with the experimental data.