Question

relative lowering of vapour pressure in case of non volatile solutes.​

Answer 1

check the attachment!!!

Answer 2

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Relative lowering of vapour pressure:

The vapour pressure of a liquid is the pressure of the vapour which is in equilibrium with that liquid. The vapour pressure of a solvent is lowered when a non-volatile solute is dissolved in it to form a solution. , which is proportional to the mole fraction of solute.