Fe + 2HCl = FeCl2 + H2 FeCl2 + 2AgNO3 = Fe(NO3)2 + 2AgCl Fe(NO3)2 + Ba(OH)2 = Ba(NO3)2 + Fe(OH)2 Fe(OH)2 (t)= FeO + H2O FeO + C (t)= Fe + CO