Цепочка превращений "Железо"
Fe -> FeCl2 -> Fe(OH)2 -> Fe(OH)3 -> FeCl3 -> Fe(OH)3 -> Fe2O3 -> FeCl3 -> Fe
Fe -> FeCl2 -> Fe(OH)2 -> Fe(OH)3 -> FeCl3 -> Fe(OH)3 -> Fe2O3 -> FeCl3 -> Fe
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Answers & Comments
FeCl2+2NaOH=Fe(OH)2+2NaCl
4Fe(OH)2+2H2O+O2=4Fe(OH)3
2Fe(OH)3=Fe2O3+3H2O
Fe2O3+6HCl=2FeCl3+3H2O
2FeCl3+3Zn=2Fe+3ZnCl2