1. Solubility of ionic compounds
November 13, 2017
Solubility of ionic compounds
Equilibrium
Learning Target: I CAN use equilibrium and RICE tables to determine the values of Ksp and solubility values of ionic compounds dissolved in water

2. November 13, 2017
Do Now (4 min)
Learning target: I CAN use equilibrium and RICE tables to determine the values of Ksp and solubility values of ionic compounds dissolved in water
Answer on your Do Now Sheet:
Write out the equation for the dissolution of calcium nitrate.
HINT: Dissolution means to dissolve in water
Learning Target: I CAN use equilibrium and RICE tables to determine the values of Ksp and solubility values of ionic compounds dissolved in water

3. announcements November 13, 2017 Lab 4 – tomorrow
Wear appropriate attire
Test corrections – complete on Wednesday, November 15
Afterschool tutoring – every Wednesday 3 -4 PM
Solubility worksheet – due Tuesday, November 14
Learning Target: I CAN use equilibrium and RICE tables to determine the values of Ksp and solubility values of ionic compounds dissolved in water

4. Ionic compounds November 13, 2017 Ionic compound:
When a cation (positively charged ion) forms an ionic bond (electrostatic attraction) to an anion (negatively charged ion)
Na+ and Cl- form NaCl
NH4+ and NO3- form NH4NO3
SHORTCUT: if you see a metal with a nonmetal it is always an ionic compound
FeCl3
Li2S
Learning Target: I CAN use equilibrium and RICE tables to determine the values of Ksp and solubility values of ionic compounds dissolved in water

5. Solubility November 13, 2017 Remember this from Regents Chemistry?
What did you use it for??
Learning Target: I CAN use equilibrium and RICE tables to determine the values of Ksp and solubility values of ionic compounds dissolved in water

6. November 13, 2017
Solubility
In AP, we go more in-depth. What is solubility?
DEFINITION: The maximum quantity of a substance that may be dissolved in another. It is the maximum amount of solute that may be dissolved in a solvent at equilibrium, which produces a saturated solution.
Learning Target: I CAN use equilibrium and RICE tables to determine the values of Ksp and solubility values of ionic compounds dissolved in water

7. November 13, 2017
Solubility
Learning Target: I CAN use equilibrium and RICE tables to determine the values of Ksp and solubility values of ionic compounds dissolved in water

8. November 13, 2017
Solubility
Each ionic compound will dissolve only to a certain extent in water.
We can determine what that is using the solubility product constant (Ksp) and the solubility of the salt
We can model how a salt will dissolve in water through the following equation:
H2O
R NaCl (s)  Na+(aq) + Cl-(aq) Ksp = 36 𝐾𝑠𝑝= 𝑁𝑎+ [𝐶𝑙−] 1 I
C +x +x = 𝑥 [𝑥] 1 x = 6
E x x
The solubility of NaCl is 6M
Learning Target: I CAN use equilibrium and RICE tables to determine the values of Ksp and solubility values of ionic compounds dissolved in water

9. Solubility (6 min) November 13, 2017 TRY IT BY YOURSELF!
On your worksheet
An experiment is conducted to determine the solubility of magnesium fluoride, and it is found that g of the compound will dissolve in mL water. What is Ksp for MgF2?
Learning Target: I CAN use equilibrium and RICE tables to determine the values of Ksp and solubility values of ionic compounds dissolved in water

10. Solubility (6 min) November 13, 2017 TRY IT IN YOUR PAIR!
On your worksheet
The solubility product constant for silver sulfate is 1.4 × 10–5 at 25°C. What is the solubility (g/100 mL water) of the compound?
HINT: Watch your units! [ ] means mol/L
Learning Target: I CAN use equilibrium and RICE tables to determine the values of Ksp and solubility values of ionic compounds dissolved in water

11. Solubility (10 min) November 13, 2017 TRY IT IN YOUR PAIR!
On your worksheet
25.0 mL of a solution that is M in barium chloride is added to 25.0 mL of a solution that is
M in sodium sulfate. Given that Ksp = 1.1 × 10–10 for barium sulfate, will precipitation occur or will the solution remain unsaturated? Write the equilibrium expression and provide a calculation to support your answer.
Learning Target: I CAN use equilibrium and RICE tables to determine the values of Ksp and solubility values of ionic compounds dissolved in water

12. Solubility worksheet (40 min)
November 13, 2017
Solubility worksheet (40 min)
TRY IT IN YOUR GROUP OF 4
Complete the worksheet in your groups
Each student should write their own work
Learning Target: I CAN use equilibrium and RICE tables to determine the values of Ksp and solubility values of ionic compounds dissolved in water

13. Remainder for homework
November 13, 2017
Remainder for homework
Complete the remainder of the worksheet for homework – due Tuesday, November 14
Learning Target: I CAN use equilibrium and RICE tables to determine the values of Ksp and solubility values of ionic compounds dissolved in water

14. Exit ticket (3 min) November 13, 2017
On a separate sheet of paper: What is the solubility for an ionic substance, AB, with a Ksp of 1 x 10-7?
Learning Target: I CAN use equilibrium and RICE tables to determine the values of Ksp and solubility values of ionic compounds dissolved in water