Chapter 14, Problem 29RQ

Write the equilibrium law for the following reactions in aqueous solution.

$\begin{array}{l}\left(\text{a}\right){\text{ Ag}}^{\text{+}}\left(aq\right){\text{ + 2NH}}_{\text{3}}\left(aq\right)\stackrel{}{\rightleftarrows }\text{Ag}{\left({\text{NH}}_{\text{3}}\right)}_{\text{2}}{}^{\text{+}}\left(aq\right)\\ \left(\text{b}\right){\text{ Cd}}^{\text{2+}}\left(aq\right){\text{+ 4SCN}}^{\text{-}}\left(aq\right)\stackrel{}{\rightleftarrows }\text{ Cd}{\left(\text{SCN}\right)}_4^{2-}\text{(}aq\text{)}\end{array}$