For \(MnO_4^-+8H^++5Fe^{2+}\rightarrow Mn^{2+}+5Fe^{3+}+4H_2O\), which statement is correct?
| Reasoning stage | What to do |
|---|
| Identify | Extract the particles, substances, observations, quantities and conditions stated in the stem. |
| Apply | Use oxidation states and redox agents to compare the five alternatives. |
| Verify | Balance atoms, charge and electrons; confirm electrode polarity, physical state and the presence or absence of water. |
Select one option.