Method for Calculating Thermodynamic Properties of Poorly Studied Liquids

The article discusses the use of a virtual model of isochoric heating of various liquids in educational laboratories and in practical classes. The article proposes a method for obtaining information about the thermodynamic properties of poorly studied liquids at pressures significantly higher than atmospheric pressure, when only the density, isobaric heat capacity and the speed of sound at atmospheric pressure are known. The basis of the method is the assumption of a linear dependence of fluid pressure on temperature in an isochoric process. Approbation of the method on the example of toluene up to pressures of 50 MPa gave satisfactory results.