Influence of pressure and temperature on mixing properties of Ar-Kr mixtures

The mixing properties or equimolar Ar-Kr mixtures are studied by Monte Carlo calculations in the isobaric-isothermal ensemble and by the van der Waals one-Fluid model. Results of excess volume and enthalpy at T = 300 K calculated by both methods are compared: these are in close agreement for excess volume while the conclusion appears less clear in the case of excess enthalpy.