Question

$2{\mathrm{KClO}}_3\left(s\right)\stackrel{\mathrm{Heat}}{\to }2\mathrm{KCl}\left(s\right)+3O_2\left(g\right)$
The above reaction is an example of decomposition reaction.

• A. thermal
• B. photo
• C. electro

Answer 1

The correct option is A thermal

The given reaction is thermal decomposition reaction. In 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.