Properties of solution affected by vapour pressure
- Vapour pressure of solution decreases on addition of a non-volatile solute to a volatile solvent.
- Properties of solutions affected by the decrease of vapour pressure includes-
- Relative lowering of vapour pressure of the solvent
- Depression of freezing point of the solvent
- Elevation of boiling point of the solvent and
- Osmotic pressure of the solution.
- These properties of solution depend on the number of solute particles present in the solution regardless of their nature relative to the total number of particles present in the solution. These properties are termed as colligative properties derived from a Latin word with co meaning together ligare meaning to bind.
