Step 1: Colligative properties (such as boiling point elevation, freezing point depression, osmotic pressure, and vapor pressure lowering) depend only on the number of solute particles, not their identity.
Step 2: These properties are a function of solute concentration, not the chemical nature of solute or solvent.
State Raoult's law related to lowering of vapour pressure. Calculate the vapour pressure of pure water at 293 K temperature when 25 g of glucose is dissolved in 450 g of water. Vapour pressure of pure water at 293 K temperature is 1535 mmHg.