CaCO3 in chemistry ?

CaCO3 is the chemical formula for calcium carbonate, a common compound found in rocks, shells, and pearls. It is used in a variety of applications, including as a dietary supplement, antacid, and in the manufacturing of cement, plastics, and paper.

Calcium Carbonate (CaCO3)

- Chemical compound with formula CaCO3
- Common name: Chalk, limestone, marble, or calcite
- Properties:
- White, crystalline solid or powder
- Insoluble in water
- Reacts with acids to release carbon dioxide gas (CO2)
- High melting point (1339°C)

Applications:

- Construction:
- Cement production
- Aggregate in concrete
- Building materials (e.g., limestone blocks, marble tiles)
- Agriculture:
- Soil amendment to neutralize acidity
- Source of calcium for plants
- Industrial:
- Production of lime (CaO) for various uses
- Papermaking
- Glassmaking
- Pharmaceuticals:
- Antacid tablets
- Calcium supplements
- Other:
- Chalk for writing or drawing
- Limestone as a flux in metallurgy
- Cultural and artistic applications (e.g., marble sculptures, limestone carvings)

Reactions and Reactivity:

- Reaction with acids:
- CaCO3 + 2HCl → CaCl2 + H2O + CO2
- Thermal decomposition:
- CaCO3 → CaO + CO2 (occurs at high temperatures)
- Hydrolysis:
- CaCO3 + H2O → Ca(OH)2 + CO2 (slow reaction)