If mole fraction of the solvent in a solution decreases then what happened to vapour pressur,boiling point and osmotic pressure

Vapour pressure of solution will decrease . Boiling point will remain same and osmotic pressure will increase

Vapour pressure of the solution increases because V.P is directly proportional to the mole fraction of solvent.boiling point decreases because ∆tb is directly inversely proportional to no. Of moles of solvent and osmotic pressure increases because the no. Of solvent moles decreases n therefore comparibly there r more solute moles.