Question 2 A 100-kmolh feed consisting of 10, 20, 20, and 50 mol% of propane (3), n-butane (4), n-pentane (5), and n-hexane (6), respectively, enters a distillation column at 690 kPa and 93.C. Assuming the feed stream is at phase equilibrium, what molar fraction of the feed enters as liquid, and what are the equilibrium liquid and vapor compositions in mole fractions? az = 5.0,04 = 2.0, as = 0.5, 0g = 0.3 Use the goad seek tool to calculate the value of Y