Raoult's Law Definition

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

Raoult's Law is expressed by

P_solution = Χ_solventP⁰_solvent

where
P_solution is the vapor pressure of the solution
Χ_solvent is mole fraction of the solvent
P⁰_solvent 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.