1. Warm Up 11/1/17
1. What is an acid?
2. What is a base?
3.How many times more acidic is a substance with a pH of 2, than one with a pH of 5?

2. Warm Up 11/1/17 1. What is an acid? More H+ released in a solution
2. What is a base? More OH- released in a solution
3.How many times more acidic is a substance with a pH of 2, than one with a pH of 5?
10 X 10 X 10 = 1,000 times more acidic

3. Solubility NOTES B4 WATER UNIT

4. Solution = Solute + Solvent1

5. Solvation/Dissociation
Process of surrounding solute particles with solvent particles to form a solution
Video 1

6. Like Dissolves Like
Polar substances dissolve polar substances and ionic substances
Nonpolar substances dissolve nonpolar substances
Water is a universal (versatile) solvent because it is polar.
EX: Demo
Styrofoam (nonpolar) + water (polar) = insoluble
Styrofoam (nonpolar) + acetone (nonpolar) = soluble 1

7. Factors Affecting the Rate of Solvation
To increase solvation of a solid
Heat it (↑ temp.)
Stir it (agitate the mixture)
Crush it (↑ surface area)
To increase solvation of a gas
Cool it
Increase pressure 1

8. Temperature and Pressure Change: Solid vs. Gas

9. Pressure Change: Solid vs. Gas

10. Solids dissolve best when Gases dissolve the best when
Summary
Solids dissolve best when
Gases dissolve the best when
Heated
Solution is cold
Stirred
Pressure is high
Crushed

11. Solubility
The amount of solute that will dissolve in a given amount of solvent at a specific temperature and pressure (for gases), (g of solute/100g of solvent). 1

12. Types of Solutions
Unsaturated – a solution that can dissolve more solute
Saturated – a solution that contains the maximum amount of solute that can dissolve
Supersaturated – a solution that cannot dissolve more solute 1

13. Practice 80 grams 47 grams 160 grams
How many grams of NaNO3 will dissolve in 100g of H20 at 10⁰C
How many grams of KCl will dissolve in 100g H20 at 70 ⁰ C
How many grams of NaNO3 will dissolve in 200g H2O at 10 ⁰ C
80 grams
47 grams
160 grams 1