Essential Chemistry for IGCSE - Acids And Bases (Section 2 - No. 31)
What is the common ion effect?
The decrease in solubility of a sparingly soluble salt when a soluble salt containing a common ion is added to the solution.
The increase in solubility of a sparingly soluble salt when a soluble salt containing a common ion is added to the solution.
The increase in acidity of a solution upon adding an acid
The decrease in basicity of a solution upon adding a base
Explanation
The common ion effect is the decrease in solubility of a sparingly soluble salt when a soluble salt containing a common ion is added.
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