Answer:
4Fe(s) + 3O2(g) → 2Fe2O3(s)
3Fe(s) + 2O2(g) → Fe3O4(s)
Explanation:
Iron has 2 oxidation state of +2 and +3. The oxidation number of + 3 can react with oxygen to form a compound known as ferric oxide. The reaction is as follows
Fe(s) + O2(g) → Fe2O3(s)
The equation is not balanced so we need to balance it.
4Fe(s) + 3O2(g) → 2Fe2O3(s)
The atom on both side is balanced .
The combination of Iron (ii) and (iii) can react with oxygen as follows
Fe(s) + O2(g) → Fe3O4(s)
Balancing the equation
3Fe(s) + 2O2(g) → Fe3O4(s)
