Question

the accompanying chart are appropriate vapor pressures for benzeneand 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


a. What is the mole fraction of each component if 3.9 g of benzene(C6H6) is dissolved in 4.6 g of toluene (C7H8)?

b. Assuming that this mixture is ideal, that is, it followsRaoult's Law, what is the partial vapor pressure of benzene in thismixture at 50 C?

c. Estimate to the nearest degree the temperature at which thevapor pressure of the solution equals 1 atm (bp of thesolution).

d. Calculate the composition of the vapor (mole fraction of eachcomponent) that is in equilibrium in the solution at the boilingpoint of this solution.

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