MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistrySolutionsRelative lowering of vapour pressure
The relative lowering of the vapour pressure is equal to the ratio between the numbers of
A.solute molecules to the solvent molecules.
B.solute molecules to the total molecules in the✓ Correct
C.solvent molecules to the total molecules in the
D.solvent molecules to the total number of ions of the
Explanation
The relative lowering of the vapour pressure is equal to the ratio between the numbers of solute molecules to the total molecules in the solution. Thus, (b) is the correct option.