Question

Fe2O3- Fe3o4- FeO - Fe

Answer 1

3Fe2O3+CO→2Fe3O4+CO2  
Fe3O4+CO→3FeO+CO2 
FeO+CO→Fe+CO2

Answer 2

The compounds you mentioned are different forms of iron oxide, which is a chemical compound composed of iron and oxygen. Here's a brief explanation of each compound:

1. Fe2O3: This is known as iron(III) oxide or ferric oxide. It consists of two iron (Fe) atoms bonded to three oxygen (O) atoms. It is commonly known as rust and has a reddish-brown color. Fe2O3 is often found in nature as the mineral hematite.

2. Fe3O4: This compound is called iron(II,III) oxide or ferrous ferric oxide. It is a mixed valence compound, meaning it contains both Fe(II) and Fe(III) ions. Fe3O4 is commonly known as magnetite and is a black, magnetic mineral. It has a crystal structure where Fe(II) and Fe(III) ions are distributed in a specific pattern.

3. FeO: This compound is iron(II) oxide or ferrous oxide. It consists of one iron (Fe) atom bonded to one oxygen (O) atom. It is a black solid and is less common than the other two forms of iron oxide. FeO can be formed when iron is heated in the presence of oxygen, but it tends to oxidize further to form Fe3O4 or Fe2O3.

4. Fe: Fe represents elemental iron, which is not an oxide compound. It is the pure form of iron without any oxygen. Elemental iron is a lustrous, silvery-gray metal and is the most common element found on Earth by mass.

These different forms of iron oxide have various applications in industries such as pigments, ceramics, catalysts, and magnetic materials.