Question

What is the reaction for the decomposition of metal carbonate?

Answer 1

Metals are the chemical elements that can easily undergo loss of electrons known as oxidation. Carbonate is a group with the molecular formula of $C{O_3}^{2 - }$ is an anionic group. Metal carbonate on decomposition forms metal oxide along with the liberation of carbon dioxide.

Complete Step By Step Answer:
Chemical elements are divided into metals and nonmetals based on nature. Metals are the chemical elements that can undergo loss of electrons whereas non-metals are the chemical elements that can gain electrons. The loss of electrons is known as oxidation and the gain of electrons is known as reduction.
Carbonate is a group that was formed by the combination of carbon and oxygen atoms. Carbonate is a group with a molecular formula of $C{O_3}^{2 - }$ , as it is an anionic group. It can form bonds with metals and form a compound known as metal carbonate.
The general molecular formula of metal carbonate is $MC{O_3}$ where M is metal with a general oxidation state of $+ 2$ and carbonate has the oxidation state of $- 2$ .
Metal carbonate undergoes decomposition to form metal oxide along with the liberation of carbon dioxide. The general chemical reaction will be as follows:
$MC{O_3}\xrightarrow{\Delta }MO + C{O_2}$
The products were metal oxide which was represented by $MO$ and carbon dioxide can also be liberated when metal carbonate undergoes decomposition.

Note:
When acid and base are reacted with each other, the neutralization reaction forms a salt and water when the base contains the hydroxide part. But when the base consists of a carbonate group the liberation of carbon dioxide will take place. As metal carbonate is also a base which liberates carbon dioxide.