These
are lowering of vapour pressure, elevation of boiling point, depression of freezing
point and osmotic pressure The process of osmosis can be reversed if a pressure
higher than the osmotic pressure is applied to the solution Colligative properties
have been used to determine the molar mass of solutes Solutes which dissociate in
solution exhibit molar mass lower than the actual molar mass and those which
associate show higher molar mass than their actual values