Question

Fe-fecl2-fe(oh) 2-feo fecl3-fe(oh) 3-fe2o3

Answer 1

Ответ:

Объяснение:

Fe + 2HCl = FeCl2 + H2

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

Fe(OH)2 = FeO + H2O

FeCl3 + 3NaOH = Fe(OH)3 + 3NaCl

2Fe(OH)3 = Fe2O3 + 3H2O

Answer 2

The sequence of chemical reactions described by the formulae you provided is a series of redox reactions involving iron. Here is the breakdown of each step:

1. Fe + FeCl2 → FeCl2 + Fe

This is a single displacement reaction in which iron (Fe) replaces the iron ion (Fe2+) in iron(II) chloride (FeCl2) to form iron(III) chloride (FeCl3) and elemental iron (Fe).

2. FeCl2 + 2NaOH → Fe(OH)2 + 2NaCl

This is a double displacement reaction in which iron(II) chloride (FeCl2) reacts with sodium hydroxide (NaOH) to form iron(II) hydroxide (Fe(OH)2) and sodium chloride (NaCl).

3. 2Fe(OH)2 + O2 → 2FeO + 2H2O

This is an oxidation-reduction reaction in which iron(II) hydroxide (Fe(OH)2) is oxidized to form iron(II) oxide (FeO) and water (H2O) by the action of oxygen (O2).

4. 2FeCl3 + 3NaOH → Fe(OH)3 + 2NaCl + H2O

This is also a double displacement reaction in which iron(III) chloride (FeCl3) reacts with sodium hydroxide (NaOH) to form iron(III) hydroxide (Fe(OH)3), sodium chloride (NaCl), and water (H2O).

5. 2Fe(OH)3 → Fe2O3 + 3H2O

This is another oxidation-reduction reaction in which iron(III) hydroxide (Fe(OH)3) is oxidized to form iron(III) oxide (Fe2O3) and water (H2O).

Overall, the series of reactions results in the conversion of iron (Fe) and iron(II) chloride (FeCl2) into iron(III) oxide (Fe2O3), with intermediate steps involving the formation of iron(II) hydroxide (Fe(OH)2), iron(II) oxide (FeO), and iron(III) hydroxide (Fe(OH)3).