Chapter 11, Problem 71E

An electrochemical cell consists of a zinc metal electrodeimmersed in a solution with ${\text{[Zn}}^{\text{2+}}\text{]=1}\text{.0}$M separatedby a porous disk from a copper metal electrode. If thecopper electrode is placed in a solution of 5.0 M ${\text{NH}}_{\text{3}}$ that is also 0.010 M in ${\text{Cu(NH}}_{\text{3}}{\text{)}}_{\text{4}}{}^{\text{2+}}$ , what is the cellpotential at 25°C.
$\begin{array}{l}{\text{Cu}}^{\text{2+}}\text{(}aq{\text{)+4NH}}_{\text{3}}\text{(}aq\text{)}\rightleftharpoons {\text{Cu(NH}}_{\text{3}}{\text{)}}_{\text{4}}{}^{\text{2+}}\text{(}aq\text{)}\\ K\text{=1}{\text{.0×10}}^{\text{13}}\end{array}$