Question

A decomposition reaction is generally represented as_______ .

• A. $A+B\to \mathrm{AB}$
• B. $\mathrm{AB}\to A+B$
• C. $\mathrm{AB}+C\to \mathrm{AC}+B$
• D. $AB+CD\to \mathrm{AD}+\mathrm{CB}$

Answer 1

The correct option is B $\mathrm{AB}\to A+B$

In a decomposition reaction, a single compound splits into two or more simple substances.
For example, silver chloride decomposes into silver and chlorine when exposed to light. The reaction is given below:
$2\text{AgCl(s)}\underrightarrow{\text{light}}2\text{Ag(s)}+{\text{Cl}}_2\text{(g)}$
So, the general representation of a decomposition reaction is $\text{AB}\to \text{A + B}$