4.2- Solubility & Saturation

Question 1

Solubility definition

Answer 1

Amount of solute that can dissolve in a given quantity of solvent(usually water)
-depends on temperature and pressure

Question 2

What are the degrees of saturation?

Answer 2

• Saturated solution
• Unsaturated solution
• Supersaturated solution

Question 3

Saturated solution definition

Answer 3

Contains the maximum amount of dissolved solute at a specific temperature

Question 4

Unsaturated solution definition

Answer 4

More solute can be dissolved at a specific temperature

Question 5

Supersaturated solution definition

Answer 5

Contains more dissolved solute than expected at a specific temperature
- achieved by changing pressure and temperature
- when unstable solute will often crystallize out of solution

Question 6

Solubility curves definition

Answer 6

Shows the solubility of a solute in a specific solvent over a range of temperatures

Question 7

Explain thermal pollution

Answer 7

-release of excess thermal energy into water
-Lowers O2 levels in water since it is less soluble at warmer temps which affects aquatic organisms
- Comes from manufacturing and power plants that need water for cooling

Question 8

Pressure definition

Answer 8

Force applied per unit area

Question 9

Effective pressure on solubility on solids/liquids

Answer 9

Little effect because not very compressible

Question 10

Effective pressure on solubility on gases

Answer 10

-significantly affected
-solubility of a gas and a liquid increases as the pressure of the gas is increased

Question 11

Common solubility trends in ionic compounds

Answer 11

Solubility tends to increase with rising temperatures

Question 12

Common solubility trends with gases

Answer 12

Solubility decreases with rising temperatures