In the presence of I-, Hg2+ forms the complex ion Hgl4²-. The equilibrium concentrations of Hg2+ and Hgl4²- are 4.5x 10-28 M and 4.4 x 10-2 M, respectively, in a 0.099 M KCN solution. Hg2+ (aq) +41-(aq) = Hgl4²- a. What's the formation constant (K₁) expression? b. Find the value for the overall formation constant, Kf and dissociation constant, Kd of Hgl4²-.

Chemistry by OpenStax (2015-05-04)
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Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
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Chapter15: Equilibria Of Other Reaction Classes
Section: Chapter Questions
Problem 65E: Sometimes equilibria fur complex ions are described in terms of dissociation constants. Kd . For the...
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In the presence of I-, Hg²+ forms the complex ion Hgl4²-. The equilibrium concentrations of Hg²+ and
Hgl4²- are 4.5x 10-28 M and 4.4× 10-² M, respectively, in a 0.099 M KCN solution.
Hg²+ (aq) + 41-(aq) = Hgl4²-
a. What's the formation constant (K₁) expression?
b.
Find the value for the overall formation constant, Kf and dissociation constant, Kd of Hgl4²¯.
Transcribed Image Text:In the presence of I-, Hg²+ forms the complex ion Hgl4²-. The equilibrium concentrations of Hg²+ and Hgl4²- are 4.5x 10-28 M and 4.4× 10-² M, respectively, in a 0.099 M KCN solution. Hg²+ (aq) + 41-(aq) = Hgl4²- a. What's the formation constant (K₁) expression? b. Find the value for the overall formation constant, Kf and dissociation constant, Kd of Hgl4²¯.
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