What is Raoult's law?

Name: Problem 29, Chapter 12: Chemistry: The Molecular Nature of Matter
Uploaded: 2021-08-13T17:19:36-08:00
Duration: 1 min 4 s
Channel: David Collins
Description: What is Raoult's law?

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Raoult's Law

Raoult's Law is a fundamental principle in physical chemistry that describes the vapor pressure of an ideal solution. It states that the partial vapor pressure of a solvent in a solution is directly proportional to its mole fraction, meaning that the vapor pressure of the solvent will decrease linearly with the addition of a non-volatile solute.

Ideal Solutions

Ideal solutions are mixtures in which the interactions between unlike molecules are similar to those among like molecules. Because of this similarity, the components of an ideal solution obey Raoult's Law, making it a useful model for predicting vapor pressures and other colligative properties.

Mole Fraction

The mole fraction is a dimensionless quantity that represents the ratio of the number of moles of a component to the total number of moles in the mixture. In the context of Raoult's Law, the mole fraction of the solvent determines how much its vapor pressure is reduced in the solution.

Vapor Pressure

Vapor pressure is the pressure exerted by a vapor when it is in equilibrium with its liquid or solid phase. In solutions, the vapor pressure of the solvent is reduced in proportion to its mole fraction, as described by Raoult's Law, which is important in understanding various colligative properties.

Transcript

Please give Ace some feedback