Which is a colligative property? — Solutions and Colligative Properties Chemistry Question

💡 Solution & Explanation

Colligative properties are properties of solutions that depend on the ratio of the number of solute particles to the number of solvent molecules in a solution, and not on the nature of the chemical species present. Osmotic pressure is a colligative property. Vapour pressure, freezing point, and boiling point are not colligative properties themselves; it is their relative lowering, depression, and elevation, respectively, that act as colligative properties. Therefore, correct answer is A.