Raoult's Law Quiz

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Questions and Answers

What is the primary application of Raoult's law?

To assess the solubility of solids in liquids
To calculate the vapor pressure of a solvent over a solution (correct)
To determine the boiling point elevation of pure solvents
To predict the behavior of ideal gas mixtures

Which factor does NOT affect the applicability of Raoult's law?

Temperature of the solution
Nature of the solute and solvent
Concentration of the solute
Color of the solution (correct)

When does Raoult's law hold true?

In solutions at extremely high temperatures only
Only in ideal solutions with similar solute and solvent properties (correct)
In any solution regardless of solute concentration
In solutions where solute particles are larger than solvent particles

What happens to the vapor pressure of a solvent when a non-volatile solute is added according to Raoult's law?

<p>It decreases relative to the concentration of the solute (C)</p> Signup and view all the answers

Which of the following statements reflects Raoult's law accurately?

<p>The partial vapor pressure of a component in a solution is the product of its mole fraction and its pure component vapor pressure (C)</p> Signup and view all the answers

Flashcards

Raoult's law application

Calculating vapor pressure of a solvent in a solution.

Raoult's law factor?

Solution color does not affect Raoult's law.

Ideal solution condition for Raoult's law?

Similar solute and solvent properties are needed.

Non-volatile solute's effect on vapor pressure?

Vapor pressure decreases.

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Accurate Raoult's law statement?

Partial vapor pressure = mole fraction * pure component vapor pressure

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Study Notes

Raoult's Law

Raoult's law primarily applies to calculating the vapor pressure of a solution.
Temperature does not impact the applicability of Raoult's law.
Raoult's law holds true for ideal solutions where the solvent-solvent and solute-solute interactions are similar to the solvent-solute interactions.
According to Raoult's Law, the vapor pressure of the solvent decreases when a non-volatile solute is added.
Raoult's law states that the partial vapor pressure of a solvent in a solution is directly proportional to the mole fraction of the solvent in the solution.