Make up the reaction equation: a) Fe- Fe3O4 – Fe- FeCl3 – Fe (OH) 3- Fe2O3

univerkov | February 5, 2021 | education

Make up the reaction equation: a) Fe- Fe3O4 – Fe- FeCl3 – Fe (OH) 3- Fe2O3 b) FeCl2 – Fe (OH) 2- Fe (OH) 3- Fe2 (SO4) 3 – FeCl3

a) 3Fe + 2O2 = Fe3O4 (when heated)
Fe3O4 + 4H2 = 3Fe + 4H2O (when heated)
2Fe + 3Cl2 = 2FeCl3
FeCl3 + 3NaOH = Fe (OH) 3 + 3NaCl
2Fe (OH) 3 = Fe2O3 + 3H2O (when heated)

b) FeCl2 + 2NaOH = Fe (OH) 2 + 2NaCl
4Fe (OH) 2 + 2H2O + O2 = 4Fe (OH) 3
2Fe (OH) 3 + 3H2SO4 = Fe2 (SO4) 3 + 6H2O
Fe2 (SO4) 3 + 3BaCl2 = 2FeCl3 + 3BaSO4

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