Decomposition of Iron(II,III) Oxide (Direct Reduction)

Fe₃O₄ + 4CO → 3Fe + 4CO₂

Overview

Iron(II,III) oxide (magnetite) is reduced by carbon monoxide to produce metallic iron and carbon dioxide. This is one of the key reactions in the blast furnace for iron smelting. The process operates at temperatures above 700 C and is the foundation of the steel industry.

Participants

Role	Substance	Coefficient	State
Reactant	Iron(II,III) Oxide Fe₃O₄	1	(s)
Reactant	Carbon Monoxide CO	4	(g)
Product	Iron Fe	3	(s)
Product	Carbon Dioxide CO₂	4	(g)

Everyday Example

Every steel product, from cars to buildings, ultimately depends on iron produced by this type of reduction reaction in blast furnaces.

Industrial Importance

This reaction is fundamental to steel production, the backbone of modern civilization. Over 1.9 billion tonnes of steel are produced annually using blast furnace ironmaking.

Properties

Type: Decomposition
Reversible: Yes
Energy: Endothermic
ΔH: 15.2 kJ/mol

Related Reactions

Cracking of Octane (Thermal Cracking) Decomposition of Ammonium Nitrate Decomposition of Barium Peroxide Decomposition of Calcium Carbonate (Calcination) Decomposition of Calcium Hypochlorite Decomposition of Carbonic Acid Decomposition of Hydrogen Peroxide Decomposition of Nitroglycerin Decomposition of Nitrous Oxide (Laughing Gas) Decomposition of Ozone

Frequently Asked Questions

What is the equation for Decomposition of Iron(II,III) Oxide (Direct Reduction)?

The balanced equation is: Fe₃O₄ + 4CO → 3Fe + 4CO₂.

What type of reaction is Decomposition of Iron(II,III) Oxide (Direct Reduction)?

Decomposition of Iron(II,III) Oxide (Direct Reduction) is a decomposition reaction. It is reversible under certain conditions.

Is Decomposition of Iron(II,III) Oxide (Direct Reduction) exothermic or endothermic?

Decomposition of Iron(II,III) Oxide (Direct Reduction) is endothermic (absorbs energy). The enthalpy change (ΔH) is 15.2 kJ/mol.