Write the reaction equation: Fe-FeCl2-Fe (OH) 2-Fe (OH) 3-Fe2O3-Fe2 (SO4) 3

univerkov | August 5, 2021 | education

1. Iron (II) chloride can be obtained by the reaction of iron and hydrochloric acid.

Fe + 2HCl = FeCl2 + H2.

2. The hydroxide is obtained as a result of the reaction of salt and alkali.

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

3.In water in the presence of oxygen, iron hydroxide is rapidly oxidized to form iron (III) hydroxide.

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

4. Fe (OH) 3 is an insoluble base; when heated it decomposes to oxide and water.

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

5. To obtain ferrous sulfate from oxide, we compose the reaction equation with sulfuric acid.

Fe2O3 + 3H2SO4 = Fe2 (SO4) 3 + 3H2O.

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