1. A distillation column with two feeds is separating ethanol and water at a pressure of 1.0 atm. The column has a total condenser with saturated liquid reflux and a partial reboiler. Feed 1 is a saturated liquid and is 42 mol% ethanol. Feed 2 flow rate is F2 = 100 kmol/h. Feed 2 is 18 mol% ethanol and is a two-phase mixture that is 30% vapor. The external reflux ratio is R = 3 Rmin, and the distillate flow rate is D= 80 kmol/h. We desire a distillate mole fraction of XD = 0.66 mole fraction ethanol and a bottoms that is Xp = 0.04 mole fraction ethanol. You can assume that CMO is valid. a. Find the flow rates F1 and B b. Find the liquid and vapor flow rates in the middle section, L' and V'. c. Determine and plot the operating lines. d. Find both optimum feed locations (above partial reboiler) and the total number of equilibrium stages needed. Step off stages from the bottom up