Thermite Reaction

2Al + Fe2O3 → Al2O3 + 2Fe

概述

Aluminum reduces iron(III) oxide in this extremely exothermic redox reaction, reaching temperatures above 2500 C. Aluminum is oxidized from Al⁰ to Al³⁺ (losing 3 electrons) while iron is reduced from Fe³⁺ to Fe⁰. Once ignited, the reaction is self-sustaining and produces molten iron.

参与者

角色 物质 系数 状态
反应物 Iron(III) Oxide Fe₂O₃ 1 (s)
反应物 Aluminum Al 2 (s)
产物 Aluminum Oxide Al₂O₃ 1 (s)
产物 Iron Fe 2 (l)

日常示例

Railroad workers use thermite welding to join rail sections in the field, pouring molten iron into a mold around the rail joint.

工业重要性

铝热焊接用于铁路轨道修复、管道焊接和金属切割。极高的反应温度使其在特种冶金应用中具有重要价值。

属性

类型
Redox
可逆
否
能量
放热
ΔH
-851.5 kJ/mol

相关反应

Iron(II) to Iron(III) Oxidation by Oxygen Bleaching with Sodium Hypochlorite Copper Reduction of Silver Ion Aqua Regia Dissolving Gold Cerium(IV) Reduction by Iron(II) Chlorine Oxidation of Bromide Copper Oxidation by Nitric Acid Hypochlorite Oxidation of Hydrogen Peroxide Hydrogen Peroxide as Oxidizing Agent (Acidic) Displacement of Hydrogen from Acid by Magnesium

Frequently Asked Questions

What is the equation for Thermite Reaction?
The balanced equation is: 2Al + Fe₂O₃ → Al₂O₃ + 2Fe.
What type of reaction is Thermite Reaction?
Thermite Reaction is a redox reaction.
Is Thermite Reaction exothermic or endothermic?
Thermite Reaction is exothermic (releases energy). The enthalpy change (ΔH) is -851.5 kJ/mol.