Question

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

• A. combination
• B. decomposition
• C. single displacement
• D. double displacement

Answer 1

The correct option is B decomposition

In the given reaction potassium chlorate ${\text{(KClO}}_3)$ on heating is decomposing into potassium chloride $\text{(KCl)}$ and oxygen ${\text{(O}}_2)$. Such reaction in which single reactant decomposes into two or more simple substances on heating is called decomposition reaction.