1. PROPERTIES OF SOLUTIONS
Section 18.1

2. AFTER READING SECTION 18.1, YOU SHOULD KNOW:
factors that increase the rate at which a solute dissolves
the difference between an unsaturated, saturated and supersaturated solution
how to read the graphs of pages 504 & 505
how the solubility of a gas and pressure are related

3. FACTORS THAT AFFECT THE RATE AT WHICH A SOLUTE DISSOLVES
Temperature
And increase in the kinetic energy will cause an increase in the rate that a solute dissolves
Surface Area
An increase in surface area will increase the rate at which a solute dissolves
Aggitation
Stirring or shaking will cause the solute to dissolve faster

4. SOLUBILITY Unsaturated Solution Saturated Solution
A solution that contains less than the maximum amount of solute for a given amount of solvent at a constant temp
Saturated Solution
A solution that contains the maximum amount of solute for a given amount of solvent at a constant temperature
Supersaturated Solution
A solution that contains more than the maximum amount of solute for a given amount of solvent at a constant temperature

5. Miscible Immiscible Two liquids that will dissolve into each other
Ex: HCl and water, milk and water
Immiscible
Two liquids that will not dissolve into each other
Ex: oil and water, hexane and water

6. SOLUBILITY AND TEMPERATURE

7. HENRY’S LAW
Gas solubility increases as the partial pressure of the gas above the solution increases
S1 = S2
P1 P2
When a bottle is closed, the liquid is under high pressure, so the CO2 is dissolved into the liquid
When the bottle is opened, the pressure decreases, which causes the solubility of CO2 to decreases

8. AFTER READING SECTION 18.1, YOU SHOULD KNOW:
factors that increase the rate at which a solute dissolves
the difference between an unsaturated, saturated and supersaturated solution
how to read the graphs of pages 504 & 505
how the solubility of a gas and pressure are related