2Fe - 6e = 2Fe3+ | 6 | | 8/8 = 1 Fe - 2e = Fe2+ | 2 ---| 8 | 2H+ +2e = H2 | 2 | | 8/2 = 4 1*(2+1) = 3
2Fe - 6e = 2Fe3+ | 6 | | 8/8 = 1 Fe - 2e = Fe2+ | 2 ---| 8 | 2H+ +2e = H2 | 2 | | 8/2 = 4 1*(2+1) = 3