[Ans. X1 -0.3] 15.40 A binary VLE system forms azeotrope at 1 atm. The pure component vapour pressures are given by In Ps= 12.710 5289 4289 In PS" = 9.29 where patis in bar and I' in K The excess Gibbs free energy of the liquid mixture is given by G" - (0.5 +590 ) x1 x3 Determine the temperature at which azeotrope is formed and its composition. Also determine heat per mole required for continuous vaporization of the azeotrope. [Ans. At azeotrope: T = 413.76 K, X1 = y = 0.7936, x2 = y2 = 0.2064, 41.58 kJ/mol] [Ans. X1 -0.3] 15.40 A binary VLE system forms azeotrope at 1 atm. The pure component vapour pressures are given by In Ps= 12.710 5289 4289 In PS" = 9.29 where patis in bar and I' in K The excess Gibbs free energy of the liquid mixture is given by G" - (0.5 +590 ) x1 x3 Determine the temperature at which azeotrope is formed and its composition. Also determine heat per mole required for continuous vaporization of the azeotrope. [Ans. At azeotrope: T = 413.76 K, X1 = y = 0.7936, x2 = y2 = 0.2064, 41.58 kJ/mol]