Question

The addition of a nonvolatile solute to a solvent give rise to elevation in boiling point and lowering in vapour pressure.

If statement is true enter 1, if false enter 0.

Answer 1

Addition of a solute to a solvent give rise to elevation in boiling point and lowering in freezing point.
When a solute is added to a solution, its vapor pressure is lowered.
Hence, the solution has to be heated to higher temperature so that its vapor pressure becomes equal to the atmospheric pressure. This results in elevation in boiling point.
Similarly a solution will freeze when its vapor pressure becomes equal to that of pure solvent.
When a solute is added to a solution, its vapor pressure is lowered.
Hence, the liquid has to be cooled to higher temperature so that its vapor pressure becomes equal to that of pure solvent. This results in depression in freezing point.