Question

Identify the type of the reaction given below:

$2{\text{KClO}}_3\text{(s)}\stackrel{\text{Heat}}{\to }2\text{KCl(s)}+3{\text{O}}_2\text{(g)}$

• 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 a thermal decomposition reaction. In a thermal decomposition reaction, a single substance breaks into two or more simple substances on heating. Here, in this case, ${\text{KClO}}_3$ on heating decomposes into potassium chloride $\text{KCl}$ and oxygen.