Write the reaction equation Fe-FeCl2-Fe (OH) 2-Fe (OH) 3-Fe2O3

univerkov | May 6, 2021 | education

1. Iron, reacting with hydrochloric acid, forms iron (II) chloride and hydrogen.

Fe + 2 HCl = FeCl2 + H2 ↑.

2. Ferric chloride, reacting with sodium hydroxide, form iron (II) hydroxide and sodium chloride.

FeCl2 + 2NaOH = Fe (OH) 2 + 2 NaCl.

3. Iron (II) hydroxide is oxidized by atmospheric oxygen to iron (III) hydroxide.

4Fe (OH) 2 + 2H2O + O2 = 4Fe (OH) 3.

4. Iron (III) hydroxide is an insoluble base, decomposes when heated, forming iron (III) oxide and water.

2Fe (OH) 3 = Fe2O3 + 3H2O.

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