Calcium Carbonate

Calcium carbonate is a chemical compound with the formula CaCO₃. It is a common substance found in rocks as the minerals calcite and aragonite and is the main component of shells of marine organisms, snails, coal balls, pearls, and eggshells. It is used in many industrial and agricultural applications, including as a dietary supplement, antacid, and as a white pigment in various products.

Properties of Calcium Carbonate

• Chemical formula: CaCO₃
• Molar mass: 100.0869 g/mol
• Appearance: White powder or colorless crystals
• Density: 2.71 g/cm³
• Melting point: 825 °C
• Solubility in water: 0.0013 g/100 mL (25 °C)

Uses of Calcium Carbonate

Calcium carbonate has various uses in different industries:

1. As a dietary supplement for calcium intake
2. As an antacid for treating heartburn and indigestion
3. In the manufacturing of cement, mortar, and lime
4. In the production of plastics, rubber, and paint
5. As a filler in the paper and plastics industry
6. As a white pigment in paints and coatings

Study Guide

To study calcium carbonate effectively, consider the following key points:

• Understand the chemical formula and structure of calcium carbonate.
• Learn about the natural occurrence of calcium carbonate in rocks and marine organisms.
• Explore the various industrial and commercial applications of calcium carbonate.
• Understand the role of calcium carbonate in biological systems, such as in shells and eggshells.
• Study the properties of calcium carbonate, including its solubility, density, and melting point.
• Review the uses of calcium carbonate in different industries and its importance as a dietary supplement and antacid.

By mastering these key points, you can gain a comprehensive understanding of calcium carbonate and its significance in various fields.