Formation of Aluminum Oxide

4Al + 3O2 → 2Al2O3

Übersicht

Aluminum reacts with oxygen to form aluminum oxide (alumina). While aluminum appears resistant to corrosion, it actually oxidizes instantly in air, forming a thin protective oxide layer that prevents further reaction. Powdered aluminum burns vigorously in oxygen.

Teilnehmer

Rolle Substanz Koeffizient Zustand
Reaktant Oxygen O 3 (g)
Reaktant Aluminum Al 4 (s)
Produkt Aluminum Oxide Al₂O₃ 2 (s)

Alltägliches Beispiel

The dull gray coating on aluminum cans and foil is a thin layer of aluminum oxide that protects the metal from further corrosion.

Industrielle Bedeutung

Aluminum oxide is used as an abrasive (corundum), in ceramics, as catalyst support material, and as the starting material for aluminum metal production via the Hall-Heroult process.

Eigenschaften

Typ
Synthesis
Reversibel
Nein
Energie
Exotherm
ΔH
-3351,4 kJ/mol

Verwandte Reaktionen

Formation of Calcium Hydroxide Formation of Carbon Monoxide Formation of Nitrogen Dioxide Formation of Potassium Chloride Formation of Sodium Bicarbonate Formation of Sodium Peroxide Formation of Silicon Dioxide Formation of Tungsten Carbide Formation of Copper(II) Sulfide Fischer-Tropsch Synthesis (General)

Frequently Asked Questions

What is the equation for Formation of Aluminum Oxide?
The balanced equation is: 4Al + 3O₂ → 2Al₂O₃.
What type of reaction is Formation of Aluminum Oxide?
Formation of Aluminum Oxide is a synthesis reaction.
Is Formation of Aluminum Oxide exothermic or endothermic?
Formation of Aluminum Oxide is exothermic (releases energy). The enthalpy change (ΔH) is -3351.4 kJ/mol.