The composition of a liquid alcohol mixture to be fed to a distillation tower at 101.32 kPa is as follows: methyl alcohol (xA = 0.30), ethyl alcohol (xB = 0.20) n-propyl alcohol (xC = 0.15), and nbutyl alcohol (xD = 0.35). Calculate the following, assuming that the mixture follows Raoult’s law: a. Boiling point and composition of vapor in equilibrium 1291 b. Dew point and composition of liquid in equilibrium c. Temperature and composition of both phases when 40% of the feed is vaporized in a flash distillation