Question

Fe->FeO->Fe2O3->FeCl3->Fe(OH)3

Answer 1

Fe->FeO->Fe $_2$ O $_3$ ->FeCl $_3$ ->Fe(OH) $_3$

1) Anaerobic oxidation of iron at high temperature

$$\boldsymbol {F e} + \quad H _ {2} O \rightarrow_ {T} \boldsymbol {F e O} + H _ {2}$$

2) Thermal oxidation of iron II oxide:

$$4 \boldsymbol {F e O} + O _ {2} \rightarrow_ {T} 2 \boldsymbol {F e} _ {2} \boldsymbol {O} _ {3}$$

3) Reaction of iron III oxide with hydrochloric acid

$$\boldsymbol {F e} _ {2} \boldsymbol {O} _ {3} + 6 H C l = \boldsymbol {F e C l} _ {3} + 3 H _ {2} O$$

4) Reaction of ferric chloride with sodium hydroxide in water:

$$\boldsymbol {F e C l} _ {3} + 3 N a O H \rightarrow \boldsymbol {F e} (\boldsymbol {O H}) _ {3} \downarrow + 3 N a C l$$