Which of the following statements is true according to Raoult's Law?

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Question: Which of the following statements is true according to Raoult\'s Law?

Options:

The vapor pressure of a solution is always higher than that of the pure solvent.
The vapor pressure of a solution is lower than that of the pure solvent.
Raoult\'s Law applies only to ideal solutions.
The mole fraction of solute affects the vapor pressure of the solvent.

Correct Answer: The vapor pressure of a solution is lower than that of the pure solvent.

Solution:

Raoult\'s Law indicates that the vapor pressure of a solution is lower than that of the pure solvent due to the presence of solute.

Which of the following statements is true according to Raoult's Law?

The vapor pressure of a solution is always higher than that of the pure solvent.
The vapor pressure of a solution is lower than that of the pure solvent.
Raoult's Law applies only to ideal solutions.
The mole fraction of solute affects the vapor pressure of the solvent.

Which of the following statements is true according to Raoult's Law?

Step 1: Understand what vapor pressure is. Vapor pressure is the pressure exerted by a vapor in equilibrium with its liquid or solid phase.
Step 2: Know what a pure solvent is. A pure solvent is a liquid that has no solute mixed in it.
Step 3: Learn about a solution. A solution is made when a solute (like salt or sugar) is mixed with a solvent (like water).
Step 4: Recognize that adding a solute to a solvent changes the properties of the solvent.
Step 5: According to Raoult's Law, when a solute is added to a solvent, the vapor pressure of the resulting solution is lower than the vapor pressure of the pure solvent.
Step 6: This happens because the solute particles take up space at the surface of the liquid, making it harder for solvent molecules to escape into the vapor phase.

No concepts available.