The presence of common ions the solubility of a slightly soluble ionic compound.
Correct answer: A. decreases
- A. decreases
- B. increases
- C. neither decreases nor increases
- D. none
Explanation
The presence of common ions in a solution can affect the solubility of a slightly soluble ionic compound. This phenomenon is described by Le Chatelier's principle.When a common ion is added to a solution containing a slightly soluble salt, the equilibrium shifts toward the side of the reaction that reduces the concentration of that ion. As a result, the solubility of the ionic compound decreases.For example, if you have a solution of a sparingly soluble salt, say AB, and you add a common ion A+ or B− (which comes from another soluble salt), the equilibrium will shift to the left, decreasing the dissociation of AB and reducing its solubility.Therefore, the correct answer is that the presence of common ions decreases the solubility of a slightly soluble ionic compound
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