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 Quantitatively, the extent to which a solute is dissociated or associated can be
expressed by van’t Hoff factor i This factor has been defined as ratio of normal
molar mass to experimentally determined molar mass or as the ratio of observed
colligative property to the calculated colligative property