A solution is made by mixing equal masses of methanol, CH4O, and ethanol, C2H6O. Determine the mole fraction of each component to at least three significant figures.

Answer 1

molar mass CH3OH = 32.04 g / mole

molar mass C2H5OH = 46.07 g / mole

Equal masses 1 mole CH3OH : 1.438 moles C2H5OH (ratio of 32.04 g : 46.07 g)

Total moles = 1 + 1.438 = 2.438

mole fraction CH3OH = 1 / 2.438 = 0.410

mole fraction C2H5OH = 1.438 / 2.438 = 0.590