MCQ
When a solution is diluted at constant temperature, its vapour pressure:
  • Increases
  • B
    Decreases
  • C
    Remains same
  • D
    May increase or decrease

Answer

Correct option: A.
Increases
When a solution is diluted at a constant temperature, its vapour pressure increases.
When the solution is diluted, the mole fraction of solute decreases and the mole fraction of solvent increases.
Hence, the relative lowering in vapour pressure decreases and the vapor pressure increases.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free