P7.9

100 gmoles of a mixture of A and B (ZAF=0.6) is fed to an equilibrium

stage. The two phases I and II leaving the stage are sampled and it is

found that XAI=0.833 and XBII = 0.75. Write down equations showing the

phase equilibrium relationship between the mole fractions of A and B in

the two phases. Calculate the total moles of each of the phases leaving the

stage as well as the separation factor αAB.