Chemical and Ionic Equilibrium - Result Question 119

####63. For the reaction, [Ag(CN)2]Ag++2CN

The equilibrium constant, at 25C, is 4.0×1019. Calculate the silver ion concentration in a solution which was originally 0.10M in KCN and 0.03M in AgNO3. (1994, 3M)

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Solution:

  1. Ag++2CNAg(CN)2

Initial : 0.030.100

Equilibrium : x0.100.060.03

K=14×1019=2.5×1018 K=2.5×1018=0.03(0.04)2x x=7.50×1018MAg+



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