The standard reduction potentials of $C{u}^{2+}|Cu$ and $C{u}^{2+}|C{u}^{⨁}$ are 0.337 V and 0.153 V, respectively. The standard electrode potential of $C{u}^{⨁}|Cu$ half cell is:

EMF of the cell:

$Cu/C{u}^{2+}(0.01M)||C{u}^{2+}(0.001M)|Cu$  

is $(E^{0}C{u}^{2+}/Cu=+0.34V)$

The standard electrode potential of Cu/Cu${}^{+2}$ electrode is 0.336. It corresponds to the reaction: