Fe->FeCi2->Fe(OH)2->Fe(OH)3->FeO3->Fe

Question

Fe->FeCi2->Fe(OH)2->Fe(OH)3->FeO3->Fe

Answer 1

Fe + HCl = FeCl2

FeCl2 + NaOH = Fe(OH)2

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Fe(OH)3 = Fe2O3 + H2O

Fe2O3 + 3H2 = 2Fe + 3H2O