What is calcium oxide made up of, production and use?

What is calcium oxide made up of? Calcium oxide, also known as quicklime or burnt lime, is a white chemical compound that has many industrial uses. This substance is generally made by baking limestone at high temperatures to produce calcium oxide and carbon dioxide. The name "quicklime" comes from its tendency to react rapidly with water, hence the word's use in phrases like "dilute quicklime".

Production of Calcium oxide

There are several methods of making calcium oxide. One of the most common is to mix limestone and coal and burn them in a kiln at temperatures ranging 500 to 700 ℃ (932 to 1296 ℉) to produce calcium oxide. Another method consists of heating calcium oxide and limestone to 700 ℃ which converts the lime into calcium oxide.

What is calcium oxide made up of?

1. Calcium

What is calcium oxide made up of? The first element in the molecular formula of calcium oxide, CaO, is calcium. Calcium is a member of the alkaline earth metal family on the periodic table. It's atomic number is 20 and its atomic mass is 40.078 amu. As an alkaline earth metal, it has a +2 oxidation state in its compounds. This can be seen in the calcium oxide formula by comparing its charge to that of the compound's anion, O2-, which is a -2 oxidation state.

2. Oxygen

The second element in the molecular formula of calcium oxide, CaO, is oxygen. You can tell this by comparing the charges and atomic numbers of CaO and O2-. The atomic number for oxygen is 8, while that for calcium is 20. Oxygen has an oxidation state of -2 and a charge of -8 while calcium has a charge of +2 and an oxidation state of +6.

3. Carbon Dioxide

The third element in the molecular formula of calcium oxide, CaO, is carbon dioxide. This can be seen by comparing the charges and atomic numbers of CaO and CO2-. The atomic number for carbon dioxide is 4, while that for oxygen is 8. There's also a difference in oxidation states. Carbon dioxide has an oxidation state of -2 while oxygen has an oxidation state of +6.

Uses of Calcium oxide

1. Baking powder

Calcium oxide is the main ingredient in baking powder, which acts as a leavening agent in baked goods. This is because it reacts with water to release carbon dioxide, a gas that causes bread dough to rise. In this case, calcium carbonate and water are the reactants.

2. Fire extinguishers

Calcium oxide can be used as an agent in fire extinguishers because it's capable of suppressing a fire by removing oxygen from the flame or smothering hot fires with its solid form, which can blanket flammable materials as well as producing heat energy for fire to feed on. It is used to extinguish fires because it reacts with carbon dioxide in the air to produce more solid calcium oxide and, thus, remove excess carbon dioxide.

3. Erosion control

Calcium oxide is also used as an agent in erosion control because its solubility is low in all natural waters. This means that it won't easily dissolve in water and, therefore, can be used for preventing soil erosion by sand and other water-based liquid materials. It's also a common ingredient in artificial reefs because of its similar solubility rate with submerged rocks made from calcium carbonate minerals such as limestone.

4. Toothpaste

Calcium oxide is used in toothpaste because it is a mild abrasive that can be used to clean teeth and gums. This is because calcium carbonate, which is the other main ingredient in toothpaste, can leave a residue on teeth similar to what's left behind in the mouth after brushing.

5. Inks

Calcium oxide is also found as an ingredient in almost all solid ink products such as ballpoint pens, pencils and crayons. It's used especially in crayon markers and tinted pencils because its ability to produce water-soluble pigment pigments makes absorbing color easier. It's also found as an ingredient of ink for printing on paper.

6. Non-stick cookware

Calcium oxide is a common ingredient in non-stick cookware because it forms a protective layer on the surface of all metal, ceramic and other non-stick materials. This layer keeps these materials free of any deposits after cooking food with them. It also makes it easier to clean and maintain by removing this coating before using the merchandise again.

Conclusion

What is calcium oxide made up of? Calcium oxide is a white chemical compound that has many industrial uses. This substance is generally made by baking limestone at high temperatures to produce calcium oxide and carbon dioxide.