Multiple choice

When a non volatile substance is dissolved in solvent, the vapour pressure of the solvent decreases. This results in ____________.

  1. an increase in boiling point of the solvent

  2. a decrease in the boiling point of solvent

  3. the solution will have a higher freezing point than the solvent

  4. the solution will have lower osmotic pressure than the solvent

  5. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This option is correct because the boiling point of liquid in the temperature at which its vapour pressure is equal to atmospheric pressure of liquid, is lowered. When a non volatile solute is added, the temperature of solution of vapour pressure will be equal to the atmospheric pressure and will be higher than the temperature of pure solvent. Boiling point of solution increases by addition of non-volatile substance.

Keep practicing — related questions