Formation of Aluminum Oxide

4Al + 3O2 → 2Al2O3

개요

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.

참여 물질

역할 물질 계수 상태
반응물 Oxygen O 3 (g)
반응물 Aluminum Al 4 (s)
생성물 Aluminum Oxide Al₂O₃ 2 (s)

일상 속 예시

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

산업적 중요성

알루미나는 알루미늄 제련(홀-에루 공정)의 원료이며, 연마재, 내화재, 세라믹, 촉매 지지체로 광범위하게 사용됩니다. 알루미늄의 자연 부식 방지층 형성 원리를 설명합니다.

성질

유형
Synthesis
가역 반응
아니오
에너지
발열
ΔH
-3351.4 kJ/mol

관련 반응

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.