The standard Gibbs energy for the given cell reaction in kJ mol–1 at 298 K is
$\mathrm{Zn}(\mathrm{s})+\mathrm{Cu}^{2+}(\mathrm{aq}) \longrightarrow \mathrm{Zn}^{2+}(\mathrm{aq})+\mathrm{Cu}(\mathrm{s})$,
$\mathrm{E}^{\circ}=2 \mathrm{~V}$ at 298 K
(Faraday’s constant, F = 96000 C mol–1)
