A liquid mixture containing 50 mole% n-butane and 50% n-pentane was placed in an evacuated container and a temperature of 60oC and a pressure of 2590 mmHg resulted. Antoine Constant for pentane: A= 6.84471; B= 1060.793; C= 231.541 butane: A= 6.82485 ; B= 943.453 ; C= 239.711   a. At equilibrium, find the composition of both liquid and vapor phases ? Xbutane =  Xpentane =  Ybutane = Ypentane = b. What fraction of the original liquid was vaporized? fraction vaporized =

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