Question

According to the Raoult's law the relative decrease in the solvent vapour pressure over the solution containing a nonvolatile solute is equal to the

• A. the mole fraction of the solute.
• B. the viscosity of solution.
• C. the number of moles of the solute.
• D. the mole fraction of the solvent

Answer 1

The correct option is B

the viscosity of solution.

Relative lowering of vapour pressure is directly proportional to the mole fraction of solute.