Question

Осуществите цепочку превращений : Fe-FeCL2-Fe(OH)3-Fe2O3

Answer 1

1) Fe + 2HCl -> FeCl2 + H2
2) FeCl2 + 2NaOH -> Fe(OH)2 + 2NaCl
3) 4Fe(OH)2 + 2H2O + O2 -> 4Fe(OH)3
    2Fe(OH)3 -t-> Fe2O3 + 3H2O
Прошу вас.

Answer 2

Fe + 2HCl = FeCl2 + H2
FeCl2 + NaOH = NaCl + Fe(OH)2
2Fe(OH)2 + H2O + O2 = 2Fe(OH)3
2Fe(OH)3 (t)= Fe2O3 + 3H2O

Answer 3

Chain of Transformations: Fe-FeCl2-Fe(OH)3-Fe2O3

The given chain of transformations involves the element iron (Fe) and its compounds. Let's break down the transformations step by step:

1. Fe to FeCl2: The transformation from iron (Fe) to iron(II) chloride (FeCl2) involves the reaction of iron with chlorine gas (Cl2). The balanced chemical equation for this reaction is:

   Fe + Cl2 → FeCl2
   

2. FeCl2 to Fe(OH)3: The transformation from iron(II) chloride (FeCl2) to iron(III) hydroxide (Fe(OH)3) involves the reaction of FeCl2 with a base, such as sodium hydroxide (NaOH). The balanced chemical equation for this reaction is:

   FeCl2 + 2NaOH → Fe(OH)3 + 2NaCl
   

3. Fe(OH)3 to Fe2O3: The transformation from iron(III) hydroxide (Fe(OH)3) to iron(III) oxide (Fe2O3) involves the dehydration of Fe(OH)3. This can be achieved by heating Fe(OH)3 to remove water molecules. The balanced chemical equation for this reaction is:

   2Fe(OH)3 → Fe2O3 + 3H2O
   

Therefore, the complete chain of transformations is: Fe → FeCl2 → Fe(OH)3 → Fe2O3.

Please note that the reactions mentioned above are simplified representations and may not account for specific reaction conditions or catalysts that may be required in practice.