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Equilibrium Concentrations in Metal Halides and Silver Sulfate Precipitation

This quiz addresses the calculation of equilibrium concentrations for Cu+ in a solution with CuBr(s) and Br- ions, as well as the determination of Ag+ concentration when Ag2SO4(s) precipitates from a given sulfate ion concentration. Additionally, it explores how the formation of complex ions affects the solubility of slightly soluble solids, considering the influence of common ions. Each question requires showing work to arrive at the correct answers based on given Ksp values.

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Equilibrium Concentrations in Metal Halides and Silver Sulfate Precipitation

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  1. Quiz 1. Find the concentration of Cu+ in equilibrium with CuBr(s) and 0.050 M Br-. The Ksp for CuBr is 5x10-9. Show your work. A. 0.050 M B. 5 x 10-8 M C. 5 x 10-9 M D. 1 x 10-7 M 2. A solution contains 2.5 x 10-3 M SO42- ion when Ag2SO4(s) begins to precipitate. What is the concentration of Ag+? The Ksp for Ag2SO4 is 1.5x10-5. Show your work. A. 7.7 x 10-2 M B. 6.0 x 10-3 M C. 0.0167 M D. 1.5x10-4 M

  2. Quiz 3. The formation of complex ions causes the solubility of a slightly soluble solid to: A. increase B. decrease C. stay the same D. none of the above 4. The formation of complex ions has a larger effect on solubility as the concentration of a common ion: A. increases B. decreases C. stays the same D. none of the above

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