AP Chemistry
7.12 Common-Ion Effect
7.11 Introduction to Solubility Equilibria
A student investigates the solubility of silver chloride, \(\text{AgCl}(s)\), by adding an excess of solid \(\text{AgCl}\) to four separate beakers containing different aqueous solutions at \(25^\circ\text{C}\):
\[ \text{AgCl}(s) \rightleftharpoons \text{Ag}^+(aq) + \text{Cl}^-(aq) \quad K_{sp} = 1.8 \times 10^{-10} \text{ at } 25^\circ\text{C} \]
Which of the following correctly ranks the molar solubility of \(\text{AgCl}(s)\) in the four beakers from greatest to least?
\[ \text{AgCl}(s) \rightleftharpoons \text{Ag}^+(aq) + \text{Cl}^-(aq) \quad K_{sp} = 1.8 \times 10^{-10} \text{ at } 25^\circ\text{C} \]
| Beaker | Solution |
|---|---|
| W | Pure distilled \(\text{H}_2\text{O}\) |
| X | \(0.050 \text{ M AgNO}_3\text{(aq)}\) |
| Y | \(0.10 \text{ M NaCl(aq)}\) |
| Z | \(0.10 \text{ M CaCl}_2\text{(aq)}\) |
Which of the following correctly ranks the molar solubility of \(\text{AgCl}(s)\) in the four beakers from greatest to least?
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