Calculate the concentration of free Ag+ ions at equilibrium?

Commercial silver plating operations frequently use a solution containing the complex [Ag(CN)2]- ion. Because the formation constant Kf is quite large, this procedure ensures that the free Ag+ concentration in solution is low to promote uniform electrodeposition. In one process, a chemist added 9.0 L of 5.5 M NaCN... show more Commercial silver plating operations frequently use a solution containing the complex [Ag(CN)2]- ion. Because the formation constant Kf is quite large, this procedure ensures that the free Ag+ concentration in solution is low to promote uniform electrodeposition. In one process, a chemist added 9.0 L of 5.5 M NaCN to 90.0 L of .12 M AgNO3. Calculate the concentration of free Ag+ ions at equilibrium. Kf for this reaction is 1.0 x 10^21.
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