1. Solubility -the ability of one substance to dissolve in another
If you’re not part of the SOLUTION,
You’re part of the PRECIPITATE!

2. Solubility
Solubility – the ability of a solute to dissolve in a solvent
If a solute WILL dissolve in a solvent – SOLUBLE
Sugar dissolves in Water
Ink dissolves in Alcohol
If a solute WILL NOT dissolve in a solvent – INSOLUBLE
Oil does not dissolve in Vinegar
Styrofoam does not dissolve in Water

3. Factors Affecting Solubility
Nature of Solute & Solvent
“Like dissolves Like”
Polar Substances will dissolve in Polar Solvents
Nonpolar Substances will dissolve in Nonpolar Solvents
Polar AND Nonpolar substances DO NOT MIX! + = + = + =

4. Factors Affecting Solubility
Temperature
As temperature INCREASES the solubility of SOLIDS in liquids INCREASES
As temperature INCREASES the solubility of GASES in liquids DECREASES
Temperature
Increase
Gas
Solid

5. Factors Affecting Solubility
Pressure – ONLY AFFECTS GASES!!
As Pressure INCREASES the solubility of GASES INCREASES
AS Pressure DECREASES the solubility of GASES DECREASES
Low Pressure
High Pressure

7. Solubility Guidelines – Table F
Ions that are Always Soluble—
Ions that are Sometimes Soluble—
Ions that are Not Soluble—

8. Solubility Curves – Table G
Saturated – full of solute (on the line)
Unsaturated – can hold more solute (below the line)
Supersaturated – holds extra solute (above the line); the extra solute will precipitate out