Question

A. If 0.420 mol  of a nonvolatile nonelectrolyte are dissolved in 3.10 mol of water, what is the vapor pressure PH2O of the resulting solution? The vapor pressure of pure water is 23.8 torr at 25 ∘C .

B. A solution is composed of 1.80 mol cyclohexane (P∘cy=97.6 torr) and 2.30 mol acetone (P∘ac=229.5 torr). What is the total vapor pressure Ptotal above this solution?

C. As you saw in Part B, the vapor above the cyclohexane-acetone solution is composed of both cyclohexane vapor and acetone vapor. What mole fraction of the vapor above the solution, Xcy(vapor), is cyclohexane?

Answer 1

3-10十0.4a O.8806818L 4390 1.80 +2.30 O 56 1.8o +a.30 米/n Jhactovn of todal 171 5959 ta

(V Cvab) -Paycto l.xari 31. 46 !귀. 5g5g