Question

tell me about roults law

Answer 1

Raoult's Law

For a solution, Raoult's law relates the relative concentrations of the components in solution with their relative vapor pressures above the solution. Raoult's law states that the vapor pressure of a solution is equal to the sum of the vapor pressures of each volatile component if it were pure multiplied by the mole fraction of that component in the solution. As a result, adding more components to a solution decreases each partial vapor pressure because the mole fraction decreases. Raoult's law can be used to calculate the molecular mass of an unknown solute.

Answer 2

Raoult's Law Definition: Raoult's Law is a law that relates the the vapor pressureof a solution is dependent on the mole fraction of a solute added to solution.

Raoult's Law is expressed by

Psolution = ΧsolventP0solvent

where
Psolution is the vapor pressure of the solution
Χsolvent is mole fraction of the solvent
P0solvent is the vapor pressure of the pure solvent

If more than one solute is added to the solution, each individual solvent's component is added to the total pressure.