\({K_C} = \frac{{[Ag{{(N{H_3})}_2})_2^ + ]}}{{[A{g^ + }]{{[N{H_3}]}^2}}} = \frac{{{{10}^{ - 1}}}}{{{{10}^{ - 1}} \times {{({{10}^3})}^2}}}\,\,\,\, \Rightarrow \,\,\,\,\,{K_C} = {10^{ - 6}}\)
${I_2}(g)$ $\rightleftharpoons$ $2I(g),\;\Delta H_r^o(298\,K) = + 150\;kJ$