Solubility Equilibria

Objectives: After completing this unit, students should be able to:

1. Distinguish between solubility and solubility product constant.
2. Write the dissociation equation and the K_sp expression for a salt given its name or chemical formula.
3. Calculate the K_sp given the solubility of a partially soluble salt or the solubility given K_sp.
4. Explain, using equations, the effect of a common ion on the solubility of a salt.
5. Calculate the solubility of a salt in the presence of a common ion.
6. Write the equations for the reaction that occurs to increase the solubility when an acid is added to a salt then predict whether its solubility depends on pH and calculate the molar solubility of a salt at a given pH.
7. Predict whether a precipitate will form when two solutions of known concentration of ions are mixed.
8. Predict when ions are added to a solution containing a mixture of several ions, the minimum concentration of the added ion that will cause precipitation and what salt will precipitate.

Reading and Homework Exercises

Table of Contents from: OpenStax Chemistry 2e: Chapter 15 – Equilibria of other Reaction Classes

• 15.1 Precipitation and Dissolution
• 15.3 Coupled Equilibria

Practice

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