Answer
0.368 V
Work Step by Step
$E^{\circ}_{cell}=\frac{0.0592\,V}{n}\log K$
Number of electrons transferred $n=2$
Equilibrium constant $K=2.69\times10^{12}$
Then, $E^{\circ}_{cell}=\frac{0.0592\,V}{2}\times\log (2.69\times10^{12})=0.368\,V$