Chemistry - Thermochemistry Question with Solution | TestHub

${\mathrm{H}}_2(\mathrm{g})⟶2{\mathrm{H}}^{+}(\mathrm{g})+2{\mathrm{e}}^{-}$

$2\mathrm{H}(\mathrm{g})+\mathrm{aq}⟶2{\mathrm{H}}^{+}(\mathrm{aq})+2{\mathrm{e}}^{-}$

$2\mathrm{H}(\mathrm{g})⟶2{\mathrm{H}}^{+}(\mathrm{g})+2{\mathrm{e}}^{-}$

${\mathrm{H}}_2(\mathrm{g})+\mathrm{aq}⟶2{\mathrm{H}}^{+}(\mathrm{aq})+2{\mathrm{e}}^{-}$