Aluminum Reacting with Iron(III) Oxide (Thermite)
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2Al + Fe2O3 → Al2O3 + 2Fe
Übersicht
The thermite reaction involves aluminum reducing iron(III) oxide to produce aluminum oxide and molten iron. This spectacularly exothermic reaction generates temperatures exceeding 2500 C, hot enough to melt iron. Once ignited (requires about 1500 C), it cannot be extinguished with water.
Teilnehmer
| Rolle | Substanz | Koeffizient | Zustand |
|---|---|---|---|
| Reaktant | Iron(III) Oxide Fe₂O₃ | 1 | (s) |
| Reaktant | Aluminum Al | 2 | (s) |
| Produkt | Aluminum Oxide Al₂O₃ | 1 | (s) |
| Produkt | Iron Fe | 2 | (l) |
Alltägliches Beispiel
The thermite reaction is used for emergency railroad track welding in the field, fusing rail ends with molten iron produced on-site.
Industrielle Bedeutung
Used in railroad track welding (thermite welding), metal cutting and demolition, incendiary devices, and the production of certain metals from their oxides.
Eigenschaften
- Reversibel
- Nein
- Energie
- Exotherm
- ΔH
- -851,5 kJ/mol