Consider a closed vessel initially containing 1 mol of pure tetrahydrofuran at 74°C and 120 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 Txy diagram for chloroform(1)/tetrahydrofuran(2) at 120 kPa shown in Fig. 12.22.

Transcribed Image Text:

78 76 74 Figure 12.22: Txy dia- gram for vapor/liquid equilibrium of chloro- form(1)/tetrahydrofuran (2) at 120 kPa. 72 70 68 66 64 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 X1. Y1 T (C)