A liquid containing 60 mol% acetone and 40 mol% toluene is heated in a container at 1 atm until 25% of the original liquid is evaporated. The liquid and vapor phases are separatedand the vapor is condensed.

a.Determine the compositions of the liquid residue and the condensed vapor. Prepare a y-x diagram, then use graphical methods to find the solution. Assume the relative volatility, , of acetone to toluene is 5.3. You may also assume Raoult's law and Dalton's law apply. Your y-x diagram should be square.

b.Determine the mole fraction of vapor phase in the mixture at 75C.