Question

At 305 K the vapor pressure of pure methanol (CH3OH) is 0.219 atm and the vapor pressure of pure ethanol (C2H5OH) is 0.114 atm. Mixing 45.0 g of methanol with 46.0 g of ethanol gives a solution that is nearly ideal.

Answer:

(a) Calculate the mole fraction of methanol in the solution. Xmethanol in solution = _______

(b) Calculate the total vapor pressure of the solution at 305 K. Total vapor pressure solution = ______atm

(c) Calculate the mole fraction of methanol in the vapor in equilibrium with the solution. Xmethanol in vapor =_____

Answer 1