Explain with vapour pressure-temperature curves that the freezing point of a solvent is lowered by dissolving a nonvolatile solute into it. Give reason for such lowering of freezing of solvent

Give two points to explain why vapour pressure of solvent is lowered by dissolving nonvolatile solute into it.

Vapour pressure of a solvent containing nonvolatile solute is:

With the help of vapour pressure-temperature curves for solution and solvent, explain why boiling point of solvent is elevated when a nonvolatile solute is dissolved into it

The lowering of vapour pressure of the solvent takes place on dissolving a non-volatile solute because

Why does NaCI solution freeze at a temperature lower than the freezing point of water ?

The mole fraction of the solvent in the solution of a non-volatile solute is 0.980. The relative lowering of vapour pressure is :

The freezing point of solution is ……..than the boiling point of pure solvent.

If P^(@) the vapour pressure of a pure solvent and P is the vapour pressure of the solution prepared by dissolving a non volatile solute in it. The mole fraction of the solvent X_(A) is given by: