Wilhelm Ostwald introduced the concept of colligative properties in 1891. He actually proposed three categories of solute properties: Colligative properties depend only on solute concentration and temperature, not on the nature of the solute particles.

Why colligative properties are named so?

These properties are called colligative properties; the word colligative comes from the Greek word meaning “related to the number,” implying that these properties are related to the number of solute particles, not their identities.

What are the 4 colligative properties?

There are four colligative properties: vapor pressure lowering, boiling point ele- vation, freezing point depression, and osmotic pressure.