Question

PLEASE explain steps, having troble solving these two questions

1. a) What are the partial and total pressures of a solution obtained by mixing 35.8 g benzene, C6H6, and 56.7 g toluene, C7H8, at 25.0 degerees Celsius?

b) Determine the composition of the vapor above this benzene-toluene solution. At 25.0 degerees Celsius the vapor pressures of benzene and toluene are 95.1 mm Hg and 28.4 mm Hg respectively.

2. Claculate the mole fraction of benzene in a benzene-toluene solution that is in equilibrium at 25.0 degrees Celsius with a vapor phase that contains 62.0 mol % C6H6. At 25.0 degrees Celsius the vapor pressures of benzene and toluene are 95.1 mm Hg and 28.4 mm Hg respectively.