lowering of vapour pressure of solution is
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The vapour pressure of a liquid is the pressure of the vapor which is in equilibrium with that liquid. The vapor pressure of a solvent is lowered when a non-volatile solute is dissolved in it to form a solution.
Reevya28:
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The lowering of vapor pressure is proportional to the mole fraction of the solute.
When a solute is added to the solvent then vapor pressure of the solvent reduces compared to the pure solvent. It is a colligative property of solutions.
The vapor pressure of the solvent above a solution changes as the concentration of the solute in the solution changes (but it does not depend on the identity of either the solvent or the solute(s) particles (kind, size or charge) in the solution).
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