Formation of Aluminum Oxide
4Al + 3O2 → 2Al2O3
Tổng quan
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.
Người tham gia
| Vai trò | Chất | Hệ số | Trạng thái |
|---|---|---|---|
| Chất phản ứng | Oxygen O | 3 | (g) |
| Chất phản ứng | Aluminum Al | 4 | (s) |
| Sản phẩm | Aluminum Oxide Al₂O₃ | 2 | (s) |
Ví dụ thực tế
The dull gray coating on aluminum cans and foil is a thin layer of aluminum oxide that protects the metal from further corrosion.
Tầm quan trọng công nghiệp
Aluminum oxide is used as an abrasive (corundum), in ceramics, as catalyst support material, and as the starting material for aluminum metal production via the Hall-Heroult process.
Tính chất
- Loại
- Synthesis
- Thuận nghịch
- Không
- Năng lượng
- Tỏa nhiệt
- ΔH
- -3351,4 kJ/mol
Phản ứng liên quan
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
Formation of Sulfur Dioxide
Formation of Hydrogen Sulfide
Formation of Carbon Monoxide
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.