How do you write the formula for this reaction: Potassium chlorate decomposes to potassium chloride and oxygen gas?

Decomposition is the breakdown of one chemical into other components after a chemical reaction occurs in the presence of heat. Similar chemical elements can also be found in the reactants and products.
In the answer to the question, provide the chemical equation for the conversion of potassium chlorate into potassium chloride and gas.
demonstrates the transformation of the chemical potassium chlorate into potassium chloride and gaseous oxygen.

Potassium chlorate's chemical name is ${\mathrm{KClO}}_3$.
Potassium chloride's chemical formula is KCL, whereas oxygen's molecular formula is ${\mathrm{O}}_2$.
Now that we are aware of the molecular formulae for the various elements contributing to the chemical process, we can simply write the balanced chemical reaction, which is as follows.
$2{\mathrm{KClO}}_3\stackrel{\Delta }{⟶}2\mathrm{KCl}+3{\mathrm{O}}_2$

Two moles of potassium chlorate undergo decomposition in the aforementioned chemical process, resulting in two moles of potassium chloride and three moles of oxygen gas as the end products.
Reactants and products should be written on the left and right sides, respectively, of a chemical reaction in order for it to be balanced.

Hence, the correct answer is option A.