Consider an aqueous solution containing 1.0 g/L of a protein (molar mass = g/mol) with a density of 1.0 .

Calculate the freezing-point depression of this solution.

Freezing-point depression = __?__ C

Calculate the osmotic pressure at 25C of this solution.

Osmotic pressure = __?__ torr

Considering your answers, which colligative property, freezing-point depression or osmotic pressure, would be better used to determine the molar masses of large molecules?

• freezing point depression
• osmotic pressure