This equation represents the decomposition process of calcium carbonate (CaCO3), producing calcium oxide (CaO), while releasing carbon dioxide (CO2) and oxygen (O2).
- Reaction conditions:
This reaction typically occurs at high temperatures (around 840 – 900 degrees Celsius).
- Reaction process:
This reaction takes place in two steps. In the first step, calcium carbonate decomposes to form calcium oxide and carbon dioxide gas. In the second step, calcium oxide further decomposes to produce calcium and oxygen.
- Observed phenomenon:
When heating calcium carbonate, we will notice the mixture starts to change color from white to light yellow (which is the color of calcium oxide). Simultaneously, we can also observe the formation of gas bubbles (which are the released carbon dioxide and oxygen gases).
Note: this reaction only occurs effectively under high temperature conditions and requires an adequate amount of oxygen. Without enough oxygen, the reaction may be incomplete, resulting in undesired products.