Write the equation of reactions in the chain of transformations: Fe-FeCl2-Fe (OH) 2-Fe (OH) 3.

1) Fe + 2HCl -> FeCl2 + H2 (you cannot take the reaction of iron with chlorine because you get FeCl3)
2) FeCl2 + 2KOH -> Fe (OH) 2 + 2KCl (you can take any other alkali instead of KOH)
3) Fe (OH) 2 + O2 + H20 -> Fe (OH) 3 or Fe (OH) 2 + H2O2 -> Fe (OH) 3



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