Question

What type of reaction is
$2KCl{O}_3\left(s\right)\stackrel{Heat}{\to }2KCl\left(s\right)+3O_2\left(g\right)?$

• A. Combination reaction
• B. Thermal decomposition reaction
• C. Photo decomposition reaction
• D. Displacement reaction

Answer 1

The correct option is B

Thermal decomposition reaction

The given reaction is thermal decomposition reaction. In the thermal decomposition reaction, a single substance breaks into two or more simpler substances when heated. $KCl{O}_3$ when heated decomposes into potassium chloride (KCl) and oxygen.