(a) One mole of chloroform(1) is added to one mole of carbon tetrachloride(2), completely filling a closed vessel. The mixture is then brought to 50°C at 0.55 bar. Under these conditions, the system...

(a) One mole of chloroform(1) is added to one mole of carbon tetrachloride(2), completely filling a closed vessel. The mixture is then brought to 50°C at 0.55 bar. Under these conditions, the system is in vapor-liquid equilibrium; the compositions of the phases are x1 = 0.428 and y1 = 0.556. Determine the total number of moles in each phase. (b) At the situation in (a) an additional 0.2 moles of chloroform are added. The system is then returned to equilibrium at 50°C and 0.55 bar. How many phases are present in this new situation? If your answer is two, what are the compositions of the two phases?