Formation of Aluminum Oxide

4Al + 3O2 → 2Al2O3

概述

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.

参与者

角色 物质 系数 状态
反应物 Oxygen O 3 (g)
反应物 Aluminum Al 4 (s)
产物 Aluminum Oxide Al₂O₃ 2 (s)

日常示例

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

工业重要性

氧化铝（刚玉）是仅次于金刚石的天然硬度矿物，广泛用于磨料、耐火材料、绝缘陶瓷和蓝宝石基板。铝的自然氧化钝化是其耐腐蚀性的根本原因。

属性

类型
Synthesis
可逆
否
能量
放热
ΔH
-3351.4 kJ/mol

相关反应

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.