Question

What is the chemical equation for the decomposition of calcium oxide?

Answer 1

`"CaO"` does not decompose easily.

Explanation:

Calcium oxide is chemically and physically stable at high temperatures.

Maybe you are looking for the decomposition of `"CaCO"_3` to `"CaO"`?

That would be

`"CaCO"_3 -> "CaO" + "CO"_2`