26.8-3. Vaporization of Multicomponent Alcohol Mixture. The vaporpressure data are given below for the following alcohols: The composition of a liquid alcohol mixture to be fed to a distillation tower at 101.32kPa is as follows: methyl alcohol (xA= 0.30), ethyl alcohol (xB=0.20)n-propyl alcohol (xC=0.15), and n butyl 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 Ans. (a) 83C,yA=0.589,yB=0.241,yC=0.084,yD=0.086; (b) 100C, xA=0.088,xB=0.089,xC=0.136,xD=0.687