Question

What is the formula of Zinc carbonate?

Answer 1

Hint: It is very important to know the structural and chemical formula of different complexes. On the basis of name and chemical formula, we can separate several molecules. Some complexes may have local daily usage names like vinegar for Ethanoic acid, Sour salt for citric acid, and many more. It is due to the fact that we can separate them without doing any test or detection and confirmation.

Complete answer:
Zinc carbonate has a chemical formula as, $ ZnC{O_3} $ . In zinc carbonate, zinc is di positively charged cation whereas carbonate is di negatively charged anion.
Zinc carbonate is found to be a crystalline powder also named smithsonite or the zinc spar or calamine. The molecular weight of zinc carbonate is $ 125.38\,g/mol $ . This compound has a boiling point around $ {333.6^\circ }C $ and a melting point near to $ {1970^\circ }C $ . The calculated density of zinc carbonate is $ 3.5g/c{m^3} $ with a pH level near to $ 10 $ on the pH scale.
 Zinc carbonate undergoes the decomposition reaction to produce carbon dioxide; the reaction so observed is as follows, $ ZnC{O_3} \to ZnO + C{O_2} $
 Zinc carbonate on treatment with acid produces zinc compound, water and carbon dioxide
The reaction of zinc carbonate and Hydrochloric acid is as shown below: -
 $ ZnC{O_3} + 2HCl \to ZnC{l_2} + C{O_2} + {H_2}O $
The reaction of zinc carbonate and Sulphuric acid is as shown below: -
 $ ZnC{O_3} + {H_2}S{O_4} \to ZnS{O_4} + C{O_2} + {H_2}O $
The Hydrothermal synthesis of zinc carbonate is as follows: -
 $ ZnC{L_2} + {K_2}C{O_3} \to ZnC{O_3} + 2KCl $ .

Note:
Zinc carbonate is an ore of zinc. It usually acts as an inorganic salt, used as a catalyst. One can use zinc carbonate for the production of rubber. Zinc carbonate has the special property to act as fungicide thus used in various products like soap, cream, oral care, etc. Zinc carbonate is also used by several petroleum industries as a sulphur absorber.