# Colligative Properties and Raoult's Law

Instructions:

question 1 of 3

### What happens to vapor pressure when you add a solute to a solution?

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### 2. 9.0g of urea (a nonelectrolyte) is dissolved in 360 g water to create a solution. The temperature of the solution is 25.0°C. If the vapor pressure of water at 25.0°C is 23.80 mmHg, calculate the vapor pressure of the urea solution at 25.0°C in mmHg. The molar mass of urea 60g/mol and water is 18g/mol.

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These resources are designed to help you gain a better grasp of what you know on colligative properties and Raoult's Law. Some terms you'll be assessed on include colligative property and osmotic pressure.

## Quiz & Worksheet Goals

This quiz and worksheet go over:

• How to best describe a colligative property
• The effect the addition of a solute has on vapor pressure
• Raoult's Law
• The formula used to calculate osmotic pressure
• Osmotic pressure

## Skills Practiced

You can also practice the following skills:

• Making connections - use understanding of the concept of what adding a solute does to vapor pressure
• Information recall - access the knowledge you've gained regarding osmotic pressure and how it can be determined
• Defining key concepts -ensure that you can accurately define main phrases, such as Raoult's Law and colligative property