Aluminum Reducing Chromium Oxide (Aluminothermic)
2Al + Cr2O3 → Al2O3 + 2Cr
Overview
Aluminum reduces chromium(III) oxide in an aluminothermic reaction similar to the iron thermite reaction. The reaction produces aluminum oxide and chromium metal at extremely high temperatures. This is one method for producing chromium metal.
Participants
| Role | Substance | Coefficient | State |
|---|---|---|---|
| Reactant | Aluminum Al | 2 | (s) |
| Product | Aluminum Oxide Al₂O₃ | 1 | (s) |
| Product | Chromium Cr | 2 | (l) |
Everyday Example
This type of aluminothermic reaction is one of the methods used to produce the chromium used in stainless steel and chrome plating.
Industrial Importance
Aluminothermic reduction is used commercially to produce chromium, manganese, and other metals that are difficult to reduce by conventional carbon reduction.
Properties
- Type
- Single Replacement
- Reversible
- No
- Energy
- Exothermic
- ΔH
- -536.0 kJ/mol
Related Reactions
Aluminum Reacting with Hydrochloric Acid
Aluminum Reacting with Iron(III) Oxide (Thermite)
Calcium Reacting with Water
Carbon Reducing Iron Oxide in Blast Furnace
Chlorine Displacing Bromine from Sodium Bromide
Chlorine Displacing Iodine from Potassium Iodide
Copper Displacing Silver from Silver Nitrate
Fluorine Displacing Chlorine from Sodium Chloride
Hydrogen Reducing Copper Oxide
Iron Displacing Copper from Copper Sulfate
Frequently Asked Questions
What is the equation for Aluminum Reducing Chromium Oxide (Aluminothermic)?
The balanced equation is: 2Al + Cr₂O₃ → Al₂O₃ + 2Cr.
What type of reaction is Aluminum Reducing Chromium Oxide (Aluminothermic)?
Aluminum Reducing Chromium Oxide (Aluminothermic) is a single replacement reaction.
Is Aluminum Reducing Chromium Oxide (Aluminothermic) exothermic or endothermic?
Aluminum Reducing Chromium Oxide (Aluminothermic) is exothermic (releases energy). The enthalpy change (ΔH) is -536.0 kJ/mol.