What is the formula of calcium oxide

What is the formula of calcium oxide?

Calcium oxide has the chemical formula CaO. The calcium cation Ca+2 and the oxygen anion O2- establish an ionic connection to produce the molecule. Calcium oxide is a white or gray-white substance with no odor that comes in firm lumps. 

CaCO3 + Heat → CaO + CO2

 Calcium carbonate is calcined at a high temperature to produce this substance.

The chemical compound calcium oxide, also known as lime, has the formula CaO. Quicklime, or calcium oxide, is an alkaline material that has been used since the Middle Ages. Quicklime is thought to be one of the oldest compounds ever discovered by humans. 

Calcium oxide has a high surface tension, a medium viscosity, and a fast to medium rate of contraction and expansion. At ceramic temperatures, this substance isn’t volatile. Calcium oxide has a minor effect on color, unless at high concentrations when it can bleach iron oxide. It’s also available in kaki/tomato red hues.

Calcium Oxide Preparation:

Calcium oxide can be made in a lime kiln by thermal breakdown of calcium carbonate (CaCO3; mineral calcite)-containing materials like limestone or seashells.

 Calcination is the term for the process of making burnt lime. It’s a method that begins by thermally decomposing the reactants at high temperatures while keeping the temperature below the melting point.

 Calcium carbonate is calculated at temperatures ranging from 1070°C to 1270°C. A rotating kiln is used to hold these reactions. Carbon dioxide and burnt lime are produced at the end of the process.

According to Le-principle, Chatelier’s, the carbon dioxide that is produced is promptly eliminated, delaying the reaction until the end of the operation.

 CaCO3 CO2 + CaO 

In the forward direction, this reaction is reversible and exothermic.

Applications of Calcium Oxide;

• It is widely utilized for medicinal and pesticide uses
• It’s used to make cement, paper, and high-grade steel, among other things
• It is the cheapest alkali available and is a key component in the production of caustic soda
• Calcium is necessary for animal life since it is found in bones, shells, and teeth
• Calcium carbonate is the most prevalent calcium compound, which is used by potters as a source of calcium oxide for glazes