In the accompanying chart are appropriate vapor pressures for benzene and toluene at various temperatures:

Temp (C) mmHg Temp (C) mmHg
Benzene 30 120 Toluene 30 37
40 180 40 60
50 270 50 95
60 390 60 140
70 550 70 200
80 760 80 290
90 1010 90 405
100 1340 100 560
110 760

d. Calculate the composition of the vapor (mole fraction of each component) that is in equilibrium in the solution at the boiling point of this solution.

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1. Also this is part e) of same question

e. Calculate the composition in weight percentage of the vapor that is in equilibrium with the solution.

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