Question

Fe-FeCl2-Fe(OH)2-Fe(OH)3-Fe2O3

Answer 1

Ответ:

Объяснение:

Fe + 2HCl = FeCl2 + H2

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

4Fe(OH)2 + O2 + 2H2O = 4Fe(OH)3

2Fe(OH)3 -> Fe2O3 + 3H2O

Answer 2

The sequence you provided represents a series of chemical compounds involving iron (Fe) and different oxidation states. Let's break it down step by step:

1. Fe: This is the chemical symbol for elemental iron, which is a metal with the atomic number 26 and the symbol Fe.

2. FeCl2: This represents iron(II) chloride. The "II" in parentheses indicates that iron is in its +2 oxidation state. Iron(II) chloride is a compound composed of iron ions with a +2 charge and chloride ions (Cl-) with a -1 charge.

3. Fe(OH)2: This is iron(II) hydroxide. The "(II)" again indicates that iron is in its +2 oxidation state. Iron(II) hydroxide is a compound composed of iron ions with a +2 charge and hydroxide ions (OH-) with a -1 charge.

4. Fe(OH)3: This is iron(III) hydroxide. The "(III)" indicates that iron is in its +3 oxidation state. Iron(III) hydroxide is a compound composed of iron ions with a +3 charge and hydroxide ions (OH-) with a -1 charge.

5. Fe2O3: This represents iron(III) oxide. The "(III)" indicates that iron is in its +3 oxidation state. Iron(III) oxide is a compound composed of two iron ions, each with a +3 charge, and three oxygen ions (O2-) with a -2 charge.

In summary, the sequence represents a progression of iron compounds with different oxidation states, ranging from elemental iron (Fe) to iron(III) oxide (Fe2O3).