Question

Hydrogen peroxide is stored away from light because it can get decomposed when exposed to light as

• A. $H _{2} O$ and $O _{2}$
• B. $H _{2}$ and $O _{2}$
• C. $H _{2} O$ and $H _{2}$
• D. $H _{2} O$ and $O _{3}$

Answer 1

Answer: (A)

Hydrogen peroxide can easily break down, or decompose, into water and oxygen There are no other molecules to react with, the parts will form water and oxygen gas as these are more stable than the original molecule $H _{2} O _{2}$.
$2 H _{2} O _{2} \rightarrow 2 H _{2} O + O _{2}$