Question

Solid calcium carbonate decomposes to produce solid calcium oxide and carbon dioxide gas. Express your answer as a chemical equation. Identify all of the phases in your answer.CaCO,(s)-CaO(s) + CO2(g)

Answer 1

`CaCO_3(s)\rightarrow CaO(s)+CO_2(g)`

Step-by-step explanation:

Hello!

In this case, when solid calcium carbonate, CaCO3 (s), is decomposed by the action of thermal energy (heat), solid calcium oxide, CaO (s) and carbon dioxide gas, CO2 (g) are yielded via the following reaction:

`CaCO_3\rightarrow CaO+CO_2`

However, since calcium carbonate is solid as well as calcium oxide and carbon dioxide is given off as a gas, we write:

`CaCO_3(s)\rightarrow CaO(s)+CO_2(g)`

Which also balanced.

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