Adding solute to a solution decreases the vapor pressure of the solution.

Name: Adding solute to a solution decreases the vapor pressure of the solution.
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When solute is added to a solution, it lowers the vapor pressure of the solvent. This is because the solute molecules take up space at the surface of the solution and reduce the number of solvent molecules that can escape into the gas phase, resulting in a lower vapor pressure. This phenomenon is known as the Raoult's Law.

Adding Solute to a Solution Decreases the Vapor Pressure of the Solution