(i) Rusting of iron Fe→Fe3+(oxidation)
(ii)Cu2++Fe→Fe2++Cu(oxidation)
Fe+H2SO4→FeSO4+H2↑(g)(oxidation)
(iii) In the formation of Iron carbonyl from Fe, the oxidation number does not change at all.
Fe0+5CO→Fe0(CO)5
(iv) Fe+H2O→Fe2O3+H2
Which of the following processes does not involve oxidation of iron?
Held on 30 Apr 2015 · Verified 9 Jul 2026.
Rusting of iron sheets
Decolourization of blue CuSO4 solution by iron
Formation of Fe(CO)5 from Fe
Liberation of H2 from steam by iron at high temperature
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