Learning Objective Practices Chapter_15 (without answers)

General Chemistry II Spring 2024 Learning Outcomes Practices Chapter 15 1. Define K sp and be able to write an equation for K sp for any ionic compound 1) Write the solubility product constant expression for the following salt: Ca 3 (PO 4 ) 2 . A) [Ca 2+ ] 3 [PO 4 3− ] 2 C) [Ca 2+ ] 2 [PO 4 3− ] 3 E) [Ca 2+ ][PO 4 3− ] B) [Ca 2+ ][PO 4 3− ] 2 D) [Ca 2+ ] 2 [PO 4 3− ] 2. Relate K sp to equilibrium concentration of ions 2) Calculate the concentration of iodide ions (I − ) in a saturated PbI 2 aqueous solution. The K sp of PbI 2 is 1.4  10 −8 . A) 3.0 × 10 −3 B) 1.5 × 10 −3 C) 3.8 × 10 −4 D) 1.4 × 10 −8 E) 3.5 × 10 −9 3) At 50°C, the solubility of lead(II) sulfate (PbSO 4 ) is 1.5 x 10 −4 M. Calculate the K sp at this temperature. A) 1.4 × 10 −11 C) 2.3 × 10 −8 E) 1.5 × 10 −4 B) 1.6 × 10 −8 D) 7.6 × 10 −10 4) A solution is 0.025 M in Pb 2+ . What minimum concentration of Cl − is required to begin to precipitate PbCl 2 . The K sp for PbCl 2 is 1.17 × 10 −5 . A) 1.17 × 10 −5 M B) 0.0108 M C) 0.0216 M D) 5.41 × 10 −4 M 3. Define the common ion effect and relate K sp to equilibrium concentration of ions when a common ion is present 5) The molar solubility of __________ is NOT affected by the pH of the solution. A) Ca 3 (PO 4 ) 2 B) MnS C) MgF 2 D) Mg(OH) 2 E) KNO 3 6) Calculate the maximum concentration in M of silver ions (Ag + ) in a solution that contains 0.025 M of CO 3 2− . The K sp of Ag 2 CO 3 is 8.1  10 −12 A) 2.8 × 10 −6 B) 1.8 × 10 −5 C) 8.1 × 10 −12 D) 1.4 × 10 −6 E) 3.2 × 10 −10 7) Determine the molar solubility of Zn(OH) 2 in a solution with a pH of 11.5. The K sp of Zn(OH) 2 is 5.0 × 10 −17 . A) 5.0 × 10 6 C) 1.6 × 10 −14 E) 5.0 × 10 −12 B) 5.0 × 10 −17 D) 1.2 × 10 −12 8) In which of the following aqueous solutions would you expect AgCl to have the lowest solubility? A) pure water C) 0.020 M KCl E) 0.0176 M NH 3 B) 0.015 M AgNO 3 D) 0.020 M BaCl 2 Page 1 of 2