Thermite Reaction

2Al + Fe2O3 → Al2O3 + 2Fe

Tổng quan

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.

Người tham gia

Vai trò Chất Hệ số Trạng thái
Chất phản ứng Iron(III) Oxide Fe₂O₃ 1 (s)
Chất phản ứng Aluminum Al 2 (s)
Sản phẩm Aluminum Oxide Al₂O₃ 1 (s)
Sản phẩm Iron Fe 2 (l)

Ví dụ thực tế

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

Tầm quan trọng công nghiệp

Thermite welding is used for railroad track repair, pipeline welding, and metal cutting. The reaction's extreme temperature makes it useful for specialty metallurgical applications.

Tính chất

Loại
Redox
Thuận nghịch
Không
Năng lượng
Tỏa nhiệt
ΔH
-851,5 kJ/mol

Phản ứng liên quan

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.