Acidified potassium manganate(VII) is allowed to react with iron(II) ethanedioate, $\mathrm{FeC_2O_4}$. The half-equations involved are shown here: $\mathrm{MnO_4^- + 8H^+ + 5e^- \rightarrow Mn^{2+} + 4H_2O}$, $\mathrm{Fe^{2+} \rightarrow Fe^{3+} + e^-}$, $\mathrm{C_2O_4^{2-} \rightarrow 2CO_2 + 2e^-}$. What number of moles of iron(II) ethanedioate react with one mole of potassium manganate(VII)?
- A0.60
- B1.67
- C2.50
- D5.00