Question

Pt 1 - Glycerol (C₃H₈O₃), also called glycerine, is widely used in the food and pharmaceutical industries. Glycerol is polar and dissolves readily in water and polar organic solvents like ethanol.

Calculate the mole fraction of the solvent in a solution that contains 2.21 g glycerol dissolved in 22.00 mL ethanol (CH₃CH₂OH; density = 0.7893 g/mL). Round to four significant digits.

Pt 2 - Use your answer to Part 2 to calculate the vapor pressure of the solution at 20°C if the vapor pressure of pure ethanol at this temperature is equal to 0.0575 atm. Assume that glycerol is a nonvolatile, nonelectrolyte solute. Round your answer to three significant digits.

Answer 1