Question

The relative lowering in vapour pressure is proportional to the ratio of number of

• A. Solute molecules to solvent molecules
• B. Solvent molecules to solute molecules
• C. Solute molecules to the total number of molecules in solution.
• D. Solvent molecules to the total number of molecules in solution.

Answer 1

Answer: (C)

Solute molecules to the total number of molecules in solution.

Answer 2

$\frac{Pº - P_{s}}{Pº} = \frac{n_{1}}{n_{1} + n_{2}}$