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

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

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

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

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

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

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

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 0 0 C +x +x 36 = 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

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 0.0080 g of the compound will dissolve in 500.0 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

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

Solubility (10 min) November 13, 2017 TRY IT IN YOUR PAIR! On your worksheet 25.0 mL of a solution that is 0.0015 M in barium chloride is added to 25.0 mL of a solution that is 0.0010 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

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

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

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