Consider a closed vessel initially containing 1 mol of tetrahydrofuran at 50°C and 52 kPa. Imagine that pure chloroform is slowly added at constant temperature and pressure until the vessel contains 1 mol tetrahydrofuran and 9 mol chloroform. Describe the evolution of phases and phase compositions during this process. Comment on the practical feasibility of carrying out such a process. What sort of device would be required? How would the total system volume change during this process? At what composition would the system volume reach its maximum value?

To the Pxy diagram for chloroform(1)/tetrahydrofuran(2) at 50°C shown in Fig. 12.21.

Transcribed Image Text:

70 68 66 64 62 60 Figure 12.21: Pxy diagram for vapor/liquid equilibrium of chloroform(1Vtetrahydro- furan(2) at 50°C. 58 56 54 52 50 48 46 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 P (kPa)