1) Fe + 2HCl = FeCl2 + H2
2) FeCl2 + 2NaOH = Fe(OH)2 + 2NaCl
3) 4Fe(OH)2 + O2 + 2H2O = 4Fe(OH)3
4) 2Fe(OH)3 = Fe2O3 + 3H2O
5)Fe2O3 + 6HCl = 2FeCl3 + 3H2O
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Answers & Comments
1) Fe + 2HCl = FeCl2 + H2
2) FeCl2 + 2NaOH = Fe(OH)2 + 2NaCl
3) 4Fe(OH)2 + O2 + 2H2O = 4Fe(OH)3
4) 2Fe(OH)3 = Fe2O3 + 3H2O
5)Fe2O3 + 6HCl = 2FeCl3 + 3H2O