Thermite Reaction
2Al + Fe2O3 → Al2O3 + 2Fe
概要
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.
参加者
| 役割 | 物質 | 係数 | 状態 |
|---|---|---|---|
| 反応物 | Iron(III) Oxide Fe₂O₃ | 1 | (s) |
| 反応物 | Aluminum Al | 2 | (s) |
| 生成物 | Aluminum Oxide Al₂O₃ | 1 | (s) |
| 生成物 | Iron Fe | 2 | (l) |
日常の例
Railroad workers use thermite welding to join rail sections in the field, pouring molten iron into a mold around the rail joint.
産業上の重要性
テルミット溶接は鉄道レールの補修、パイプライン溶接、金属切断に使用される。極めて高い温度により特殊な冶金用途に有用である。
特性
- タイプ
- Redox
- 可逆的
- いいえ
- エネルギー
- 発熱性
- ΔH
- -851.5 kJ/mol
関連する反応
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)
Copper Oxidation by Nitric Acid
Hypochlorite Oxidation of Hydrogen Peroxide
Hydrogen Peroxide as Oxidizing Agent (Acidic)
Hydrogen Peroxide Disproportionation
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.