Benzene and toluene form nearly ideal solutions and assume thatRaoult\'s Law app

Question

Benzene and toluene form nearly ideal solutions and assume thatRaoult's Law applies over the entire range of composition. At80oC, the vapor pressures of pure benzene and tolueneare 1.004 bar and 0.387 bar, respectively.
i.) Calculate the benzene mole fraction xB ofthe liquid mixture at 80oC that results in a total vaporpressure of 0.60 bar and hence obtain the benzene mole fractionyB for the vapor in equilibrium with thisliquid.
ii.) Use the lever rule to calculate the equilibrium molar rationlnv of liquid to vapor that ispresent at 80oC and a total vapor pressure of 0.60 barfor a two phase liquid/vapor mixture corresponding to a benzenemole fraction zB of 0.50 in terms of overallcomposition.

Help on any part will be greatly appreciated and I will ratelifesaver.

Explanation / Answer

=PA(1-XB)+PBXB .6=.387(1-XB)+1.004XB XB=213/716

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