Write down the reaction equations: Fe → FeCl2 → Fe (NO3) 2 → Fe (OH) 2 → FeO → Fe

To carry out the above chain of transformations of chemicals, it is necessary to carry out the following chemical reactions:

The first reaction is the interaction of the ferrous sulfate salt and the sodium chloride salt. Formed as a result of an exchange reaction, such substances as: ferrous chloride salt and sodium sulfate salt.

FeSO4 + 2 NaCl = FeCl2 + Na2SO4.

The second reaction takes place between substances such as the ferric chloride salt and the potassium nitrate salt. There is also a reaction according to the type of exchange, as a result of which a ferrous nitrate salt and a potassium chloride salt are formed.

FeCl2 + 2 KNO3 = Fe (NO3) 2 + 2 KCl

Substances enter into the third reaction: ferrous nitrate salt and lithium hydroxide. Formed ferrous hydroxide and lithium nitrate salt.

Fe (NO3) 2 + 2 LiOH = Fe (OH) 2 + 2 LiNO3
The fourth reaction is the dissociation of iron hydroxide into iron oxide and water.

Fe (OH) 2 = FeO + H2O

The fifth chemical reaction is also the dissociation of iron oxide into water and pure iron.

FeO + H2 = Fe + H2O.