Chapter 19, Problem 19.80QP

Calculate the standard cell potential of the cell corresponding to the oxidation of oxalic acid, H₂C₂O₄, by permanganate ion. MnO₄⁻.

$\begin{array}{l}5{\text{H}}_2{\text{C}}_2{\text{O}}_4(aq)+2{\text{MnO}}_4{}^{-}(aq)+6{\text{H}}^{+}(aq)\stackrel{}{\to }\hfill \\ 10{\text{CO}}_2(g)+2{\text{Mn}}^{2+}(aq)+8{\text{H}}_2\text{O}(l)\hfill \end{array}$

See Appendix C for free energies of formation: $\Delta G_f^{\circ }$ for H₂C₂O₄(aq) is −698 kJ.