Question

Why the vapous pressure of solution containing
nonvolatile solute is lower than that of pure
solvent? Vapour prespune of a liquid depends
on the ease with which the molecules escape
from the surface of liquid. When nonvolatile
solute is dissolved in a solvent, some of the
Sily face molecules of solvent are replaced by
nonvolatile solute molecules. These solute molet
do not contoibute to vapour above the sola.
Thus, the number of solvent molecules available
for vapoorzation per unit si face arka of
solh is less than the number of the surface
of
pure solvent. As a result the solvent molecules!
at the surface of soln vaporire at a slower
rate than pure solvent. This results in lowering
0 vapous pressure.
7
. in Marathi translation​

Answer 1

Answer:

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Answer 2

Because some of the surface is now occupied by solute particles, there is less room for solvent molecules. This results in less solvent being able to evaporate. The addition of a nonvolatile solute results in a lowering of the vapor pressure of the solvent.Because some of the surface is now occupied by solute particles, there is less room for solvent molecules. This results in less solvent being able to evaporate. The addition of a nonvolatile solute results in a lowering of the vapor pressure of the solvent.