Question:medium
\(K_c\) for the reaction \([\text{Ag(CN)}_2]^-\rightleftharpoons \text{Ag}^+ + 2\text{CN}^-\) is \(4.0\times10^{-19}\) at \(25^\circ\text{C}\). The equilibrium concentration of silver cation in a solution which was originally \(0.1\) molar in KCN and \(0.03\) molar in AgNO\(_3\) is:
\(K_c\) for the reaction \([\text{Ag(CN)}_2]^-\rightleftharpoons \text{Ag}^+ + 2\text{CN}^-\) is \(4.0\times10^{-19}\) at \(25^\circ\text{C}\). The equilibrium concentration of silver cation in a solution which was originally \(0.1\) molar in KCN and \(0.03\) molar in AgNO\(_3\) is:
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Large excess of ligand greatly lowers free metal ion concentration.
Updated On: Mar 24, 2026
- \(7.5\times10^{18}\)
- \(7.5\times10^{-19}\)
- \(7.5\times10^{19}\)
- \(7.5\times10^{-18}\)
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The Correct Option is D
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