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# The Colligative Properties

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Sections
Solutions
Solubility and Intermolecular Forces
Solutions: Mass Percent
Percent Concentrations
Molarity
Osmolarity
Parts per Million (ppm)
Solubility: Temperature Effect
Intro to Henry's Law
Henry's Law Calculations
Dilutions
Solution Stoichiometry
Electrolytes (Simplified)
Equivalents
Molality
The Colligative Properties
Boiling Point Elevation
Freezing Point Depression
Osmosis
Osmotic Pressure

The Colligative Properties explain what happens to a pure solvent as it transitions to a solution.

###### The 4 Colligative Properties

The 4 Colligative Properties help to explain what happens to a pure solvent as solute is added to it.

Concept #1: The 4 Colligative Properties

Some Colligative Properties will increase and others will decrease with the addition of solute to a pure solvent.

Example #1: Pure benzene, C6H6, has a boiling point of 80.1ºC. What is a possible new boiling point once an unknown amount of glucose is added to the benzene solvent?

Concept #2: Van't Hoff Factor

Example #2: Which of the following compounds will have the largest value for the Van’t Hoff factor?

Concept #3: Solute Amount

Example #3: What is the ionic molality of potassium ions in 1.18 m solution of K3PO4?

Practice: Which of the following compounds will have the highest boiling point?

Practice: Which of the following compound will have the highest vapor pressure?