Solubility Homework Problem Set

This problem set was developed by S.E. Van Bramer for Chemistry 146 at Widener University.

  1. Assuming the molar solubility of a salt is x, write the balanced chemical equation for dissolving the solid salt, write the Ksp expression for the reaction, and rearrange the Ksp expression to solve for x.
    1. AB (s)
    2. AB2 (s)
    3. A2B (s)
    4. AB3 (s)
    5. A2B3 (s)

  2. 3.2 x 10-3 g of manganese (II) hydroxide will dissolve in 1 liter of water at 25 oC. What is the pH of a saturated manganese (II) hydroxide solution? What is Ksp for manganese (II) hydroxide?

  3. How many grams of silver chromate can dissolve in 250 mL of 0.25 M sodium chromate?

  4. 0.500 grams of lead nitrate is dissolved in 250.0 mL of water. When 10 mL of 1.0 M NaCl is added to this solution: What is the mass of the precipitate? What is the equilibrium concentration of all the ions in the solution? Repeat these calculatons if 20 mL of 2.0 M Na Cl is added to the original lead nitrate solution.

Please send comments or suggestions to svanbram@science.widener.edu

Scott Van Bramer
Department of Chemistry
Widener University
Chester, PA 19013

© copyright 1996, S.E. Van Bramer
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Last Updated: Saturday, May 18, 1996