Question

Fe - Fe2O3+HCl - ? - Fe(OH)3 -t- ? - Fe2(SO4)3

Answer 1

4Fe + 3O2 = 2Fe2O3

Fe2O3 + 6HCl =2 FeCl3 + 3H2O

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

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

Fe2O3 + 3H2SO4 -> Fe2(SO4)3 + 3H2O

Answer 2

Let's break down the chemical reactions step by step:

1. Fe - This represents elemental iron.

2. Fe2O3 + HCl - In this reaction, iron(III) oxide (Fe2O3) reacts with hydrochloric acid (HCl) to form an intermediate compound.

Fe2O3 + 6HCl → 2FeCl3 + 3H2O

The reaction produces iron(III) chloride (FeCl3) and water (H2O) as products.

3. 2FeCl3 + 6NaOH - In this step, the iron(III) chloride from the previous reaction reacts with sodium hydroxide (NaOH).

2FeCl3 + 6NaOH → 2Fe(OH)3 + 6NaCl

The reaction produces iron(III) hydroxide (Fe(OH)3) and sodium chloride (NaCl) as products.

4. 2Fe(OH)3 -t- This step represents the heating (or thermally decomposing) of iron(III) hydroxide.

2Fe(OH)3 → Fe2O3 + 3H2O

The reaction produces iron(III) oxide (Fe2O3) and water (H2O) as products.

5. Fe2O3 - The iron(III) oxide obtained from the previous step is present here.

6. Fe2O3 + 3H2SO4 - In this step, iron(III) oxide reacts with sulfuric acid (H2SO4).

Fe2O3 + 3H2SO4 → Fe2(SO4)3 + 3H2O

The reaction produces iron(III) sulfate (Fe2(SO4)3) and water (H2O) as products.

So, the complete chemical reactions are as follows:

1. Fe
2. Fe2O3 + 6HCl → 2FeCl3 + 3H2O
3. 2FeCl3 + 6NaOH → 2Fe(OH)3 + 6NaCl
4. 2Fe(OH)3 -t- → Fe2O3 + 3H2O
5. Fe2O3
6. Fe2O3 + 3H2SO4 → Fe2(SO4)3 + 3H2O