The equation represents calcium carbonate (CaCO3) breaks down to form calcium oxide (CaO) and carbon dioxide (CO2) chemical reaction will be
CaO + CO2 → CaCO3.
A chemical reaction occurs that results in the chemical change of one number of chemical components into another set of organic compounds.
A chemical equation is just a description of a chemical reaction in symbols that indicates the products, reactants, but also reaction direction.
Calcium carbonate dissociate into calcium oxide and carbon dioxide.
It can be expressed as CaO + CO2 → CaCO3.
Therefore, the correct answer will be option (A).
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