How does complexation uniquely enhance the solubility of a sparingly soluble salt like in ? — Ionic Equilibrium Chemistry Question
Question
How does complexation uniquely enhance the solubility of a sparingly soluble salt like $AgCl$ in $NH_3(aq)$?
Answer: B
💡 Solution & Explanation
The dissolution $AgCl \rightleftharpoons Ag^+ + Cl^-$ ($K_{sp}$) couples with complexation $Ag^+ + 2NH_3 \rightleftharpoons [Ag(NH_3)_2]^+$ ($K_f$). The overall reaction adds both, so the equilibrium constants multiply: $K_{eq} = K_{sp} \times K_f$.
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