Formation of Calcium Oxide (Quicklime)
2Ca + O2 → 2CaO
Overview
Calcium metal reacts with oxygen to form calcium oxide, also known as quicklime. This highly exothermic reaction produces a brilliant white light, historically used in limelight theater lighting. Calcium is a reactive alkaline earth metal that readily oxidizes.
Participants
| Role | Substance | Coefficient | State |
|---|---|---|---|
| Reactant | Oxygen O | 1 | (g) |
| Reactant | Calcium Ca | 2 | (s) |
| Product | Calcium Oxide CaO | 2 | (s) |
Everyday Example
Quicklime is used in construction as a component of morite and cement, and in agriculture to raise soil pH.
Industrial Importance
Calcium oxide is produced on a massive scale for steel manufacturing, cement production, water treatment, and as a chemical feedstock. Global production exceeds 350 million tonnes annually.
Properties
- Type
- Synthesis
- Reversible
- No
- Energy
- Exothermic
- ΔH
- -1270.2 kJ/mol
Related Reactions
Fischer-Tropsch Synthesis (General)
Formation of Aluminum Oxide
Formation of Ammonia (Haber Process)
Formation of Barium Oxide
Formation of Barium Sulfate
Formation of Beryllium Oxide
Formation of Cadmium Oxide
Formation of Calcium Carbonate from Oxides
Formation of Calcium Hydroxide
Formation of Carbon Dioxide from Elements
Frequently Asked Questions
What is the equation for Formation of Calcium Oxide (Quicklime)?
The balanced equation is: 2Ca + O₂ → 2CaO.
What type of reaction is Formation of Calcium Oxide (Quicklime)?
Formation of Calcium Oxide (Quicklime) is a synthesis reaction.
Is Formation of Calcium Oxide (Quicklime) exothermic or endothermic?
Formation of Calcium Oxide (Quicklime) is exothermic (releases energy). The enthalpy change (ΔH) is -1270.2 kJ/mol.