An equimolar liquid phase of benzene (1) and m-xylene (2) coexists with its vapor at 260°C.
At this temperature, the saturation pressures are Using the van der Waals equation of state, calculate the equilibrium composition and pressure of vapor. You may assume that the liquid acts as an ideal solution.

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Pat = 1 35.2 [bar] and Pat 2 = 11.9 [bar].