1.
For the reaction [Ag(CN)2]−⇌Ag++2CN−[Ag(CN)_2]^- \rightleftharpoons Ag^+ + 2CN^-, the equilibrium constant at 25∘25^\circC is 4.0×10−194.0 \times 10^{-19}. The silver ion concentration in a solution which was originally 0.1 M in KCN and 0.03 M in AgNO3AgNO_3 is: