The cell for which the cell reaction is H₂ + Cu²⁺ → 2H⁺+Cu  is represented as

anode reaction:

$\frac{1}{2}{\mathrm{H}}_2-{\mathrm{e}}^{-}\to {\mathrm{H}}^{+}$; oxidaton half cell reaction is represented as pt,H₂|H⁺

cathode reaction:

Cu⁺² + 2e^-$\to$Cu; reduction half cell reaction is represented as Cu⁺²|Cu

Cell representation :

$\mathrm{Pt},\left(1/2{\mathrm{H}}_2\right)\left|{\mathrm{H}}^{+}\right|\left|{\mathrm{Cu}}^{+2}\right|\mathrm{Cu}$