Formation of Aluminum Oxide

4Al + 3O₂ → 2Al₂O₃

Обзор

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.

Участники

Роль	Вещество	Коэффициент	Состояние
Реагент	Oxygen O	3	(g)
Реагент	Aluminum Al	4	(s)
Продукт	Aluminum Oxide Al₂O₃	2	(s)

Пример из жизни

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

Промышленное значение

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.

Свойства

Тип: Synthesis
Обратимая: Нет
Энергия: Экзотермическая
ΔH: -3351,4 kJ/mol

Связанные реакции

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.