Thermal Decomposition of Copper(II) Carbonate
CuCO3 → CuO + CO2
Overview
Green copper(II) carbonate decomposes when heated to form black copper(II) oxide and carbon dioxide gas. This is a classic laboratory demonstration showing the color change from green to black. The reaction occurs at relatively low temperatures (~290 C).
Participants
| Role | Substance | Coefficient | State |
|---|---|---|---|
| Product | Carbon Dioxide CO₂ | 1 | (g) |
Everyday Example
The green patina on copper roofs (like the Statue of Liberty) contains copper carbonate, which forms from the reaction of copper with air and rain.
Industrial Importance
Copper carbonate decomposition is used in some copper smelting processes and in the preparation of copper oxide for ceramics and pigments.
Properties
- Type
- Decomposition
- Reversible
- No
- Energy
- Endothermic
- ΔH
- 74.0 kJ/mol
Related Reactions
Cracking of Octane (Thermal Cracking)
Decomposition of Ammonium Nitrate
Decomposition of Barium Peroxide
Decomposition of Calcium Carbonate (Calcination)
Decomposition of Calcium Hypochlorite
Decomposition of Carbonic Acid
Decomposition of Hydrogen Peroxide
Decomposition of Iron(II,III) Oxide (Direct Reduction)
Decomposition of Nitroglycerin
Decomposition of Nitrous Oxide (Laughing Gas)
Frequently Asked Questions
What is the equation for Thermal Decomposition of Copper(II) Carbonate?
The balanced equation is: CuCO₃ → CuO + CO₂.
What type of reaction is Thermal Decomposition of Copper(II) Carbonate?
Thermal Decomposition of Copper(II) Carbonate is a decomposition reaction.
Is Thermal Decomposition of Copper(II) Carbonate exothermic or endothermic?
Thermal Decomposition of Copper(II) Carbonate is endothermic (absorbs energy). The enthalpy change (ΔH) is 74.0 kJ/mol.