In Raoult's Law, 'P solution' represents the vapor pressure of the solution. Raoult's Law, as stated in the provided reference, is: P solution = (X solvent) × (Po solvent). This law describes how the vapor pressure of a solution is related to the vapor pressure of the pure solvent and its mole fraction in the solution.
Let's break down the components of Raoult's Law:
- P solution: Vapor pressure of the solution.
- X solvent: Mole fraction of the solvent in the solution. This is the ratio of the number of moles of solvent to the total number of moles in the solution.
- Po solvent: Vapor pressure of the pure solvent.
In simpler terms, Raoult's Law essentially states that the vapor pressure of a solution is directly proportional to the mole fraction of the solvent in the solution. The presence of a non-volatile solute lowers the vapor pressure of the solution because it reduces the mole fraction of the solvent.
