4. A sample of a pure substance was cooled to -1.45 °C at a pressure of 4.75 bar. A liquid phase and a vapor phase formed and were observed to

be in equilibrium.While in equilibrium, the properties of each phase were determined.Unfortunately, your crimson sweatered colleague failed to record the entropy ofthe liquid and you have a presentation to your senior management in 7 min.Please calculate the Svap in kJ/•K-kmole from the data below.