For the reaction
$2Co^{3+}(aq) + 2Cl^-(aq) \rightarrow 2Co^{2+}(aq) + Cl_2(g)$. $E^o = 0.483 V$
what is the cell potential at 25 °C if the concentrations are $[Co^{3+}] = 0.392 M$, $[Co^{2+}] = 0.423 M$, and $[Cl^-] = 0.563 M$, and the pressure of $Cl_2$ is $P_{Cl_2} = 7.70 atm$?
Express your answer with the appropriate units.
E = 0.443 V