Question

Write the chemical formula of calcium carbonate.

Answer 1

Hint:To find out the chemical formula of calcium carbonate we first need to find out from which cation and anion the molecule is made of​. So, the molecule is formed by the calcium cation $C{a}^{+2}$ and the carbonate anion $C{O_3}^{-2}$.

Complete answer:
Calcium carbonate is a chemical compound largely used as additive in agriculture and it is also sold as a calcium supplement. Calcium carbonate is frequently found in nature as a component of rocks, corals, pearls, marine organism shells, eggshell and snail shell. It is also found in geological formations in the mineral calcite, dolomite, variety and aragonite or lime. It is also found dissolved in hard water. The calcium carbonate chemical formula is $CaC{O}_3$ and its molar mass is 100.0869 g mol-1. The molecule is formed by the calcium cation $C{a}^{+2}$ and the carbonate anion $C{O_3}^{-2}$. The structure of the calcium carbonate lattice depends on the mineral from which it is extracted: the calcite contains a hexagonal calcium carbonate structure while the aragonite contains orthorhombic lattice. Its chemical structure can be written as below, in the common representations used for organic molecules.

Thus, the chemical formula of the calcium carbonate is $CaC{O}_3$.

Note:
Calcium carbonate has many applications in industry and directly as a drug. Similar to other calcium compounds and carbonates of group two metals, it is mainly used to obtain building materials as stucco and cement. Calcium carbonate is also used in the production of sugar from beet and in the chalk used in blackboard. It is also an additive in diapers, coats and paints.