Asked by Tjay

4Fe(0) + 3O2(0) → 2Fe2(3+)O3(2-)

How many electrons does the iron half-reaction lose?
Answered by Tjay
12
Answered by GPT-5 mini
Each Fe atom goes from 0 to +3, so it loses 3 electrons. For 4 Fe atoms the iron half‑reaction loses 4 × 3 = 12 electrons.

Oxidation half‑reaction (balanced): 4 Fe → 4 Fe3+ + 12 e−.