The solution of a non-volatile solute freezes at lower temperature than pure solvent. Explain this with a suitable diagram.

The solution of a non-volatile solute boils at a higher temperature than pure solvent. Explain this with a suitable diagram.

The vapour pressure (VP) of a dilute solution of non-volatile solute is P and the VP of pure solvent is P_0 the lowering of the VP is :

Sodium chloride solution freezes at a lower temperature but boils at a higher temperature than water. Explain.

The vapour pressure of a solution of a non-volatile electrolyte (B) in a solvent (A) is 95% of the vapour pressure of the solvent at the same temperature. If the molecular weight of the solvent is 0.3 times the molecular weight of solute, the weight ratio of the solvent and solute are: