Осуществите превращение:
Fe -> FeCl3 -> Fe(OH)3 -> Fe2(SO4)3 -> Fe(OH)3 -> Fe2O3 -> Fe -> FeCl2
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Осуществите превращение:
Fe -> FeCl3 -> Fe(OH)3 -> Fe2(SO4)3 -> Fe(OH)3 -> Fe2O3 -> Fe -> FeCl2
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Answers & Comments
1) 3Cl2 + 2Fe = 2FeCl3
2) FeCl3 + 3NaOH → Fe(OH)3↓ + 3NaCl
3) 3H2SO4 + 2Fe(OH)3 = Fe2(SO4)3 + 6H2O
4) Fe2(SO4)3 + 3Ba(OH)2 → 2Fe(OH)3↓ + 3BaSO4↓
5) 2Fe(OH)3 = Fe2O3 + 3H2O
6) Fe2O3 + 3H2 = 2Fe + 3H2O
7) 2FeCl3 + Fe = 3FeCl2↓