Interpreting solubility curves

Interpreting Solubility Curves in High School Chemistry (Temperature on X, Solubility on Y)

1. Interpreting Solubility Curves Unit 9: Solutions

2. What are solubility curves? Changing the temperature and pressure changes the amount of solute that can dissolve. Solubility measures the amount of solute dissolved in a solvent at a certain temperature Solubility curves show the solubility (grams per 100g of water) at different temperatures

3. What are solubility curves? Points ON the curve show saturated soln Points ABOVE the curve show supersaturated soln Points BELOW the curve show unsaturated soln

4. What is the solubility of solids? For solids… As temperature increases solubility increases As temperature decreases solubility decreases This is known as directly proportional – they both do the same thing!

5. What is the solubility of solids? Which substances are solids? KNO 3 NH 4 Cl NaCl K2SO 4 KClO 4

6. What is the solubility of gases? For gases… As temperature increases solubility decreases As temperature decreases solubility increases This is known as inversely proportional – they do DIFFERENT things!

7. What is the solubility of gases? Which substance is a gas? Li 2 SO 4

8. Practice Can more sugar dissolve in tea when it is hot or cold? Explain your reasoning. If it gets too hot on a summer day, why might many fish die resulting in fish kills?