Question

Distinguish between the vapour pressure of pure solvent and its solution

Answer 1

Answer:

The vapour pressure of a solution of a non-volatile solute is equal to the vapour pressure of the pure solvent at that temperature multiplied by its mole fraction. ... In this equation, Po is the vapour pressure of the pure solvent at a particular temperature.The "pure solvent" is the solvent without solute, and the "solvent" (a clearer way is to simply say "solution") is the solvent with solute.

Answer 2

Answer:

That means the vapor pressure of the impure solvent and that of the pure solvent are equal. ... Thus, with no solute, the concentration of pure solvent to solution is 1:1 , and a1=χ1=γ1=1 . So, the gist of it is that: P1 is the vapor pressure of the solvent for when χ1<1 and a1<1