You are separating methanol from chloroform at 400 k and your goal is to create 100 mol/hr of liquid for every 250 mol/hr of incoming mixture. the liquid will have a mole fraction of chloroform equal to 0.90. at this mol fraction and temperature, the activity coefficient of chloroform is 1.05 while the activity coefficient of methanol is 3.7. the saturation pressure for chloroform at 400k is 5.96 bar, while the saturation pressure for methanol at 400k is 7.76 bar. this system does not form an azeotrope at any composition and you can assume ideal gas.

a. assuming the gas phase is ideal, calculate the pressure of the flash separator and calculate the mol fraction of each species in the vapor phase.

b. what is the total mol fraction of methanol in the mixture entering the flash separator.