An sewage from a reactor has a combination of ethanol, acetone, and acetonitrile with flow rate of 120 kmol/h, 150 kmol/h, and 30 kmol/h respectively. This combination is to be divided in a phase column at the temperature of 333.15 Kelvin. conclude the range of pressures that this system can exists as 2 phases By imagine Raoult's law is applied to the system