3) Tray efficiencies. 1.0 kmol/hr of a saturated liquid feed of methanol (1) and water (2) (xp = 0.60) is to be distilled in a distillation column equipped with a total condenser and a partial reboiler. The column operates at a constant pressure of P = 98 kPa, the reflux ratio of the column is R=1.3, and McCabe-Thiele assumptions apply. The methanol mole fraction of the distillate product is to be xp = 0.95. It is necessary to recover 90 mol% of the methanol in the distillate product. For the methanol (1) and water (2) system (P = 98 kPa), the vapor-liquid equilibrium data are: T(C) 96.5 92.3 87.5 80.1 75.9 70.6 68.7 66.4 X1 0.0084 0.0258 0.068 0.137 0.24 0.48 0.572 0.741 yi 0.103 0.227 0.391 0.568 0.68 0.79 0.82 0.906 Use McCabe-Thiele diagram(s) to investigate the effect of non-ideal trays by comparing the number of trays required for the conditions for: Case 1 of Emv,i = 1.0, Case 2: Emv,i = 0.75, and Case 3: Emv,i = 0.5. Compare your results and discuss the effect of tray efficiency on number of trays