Some Basic Concepts of Chemistry 2 Question 11
11. From the following statements regarding $\mathrm{H}{2} \mathrm{O}{2}$ choose the incorrect statement.
(2015 Main)
(a) It can act only as an oxidising agent
(b) It decomposed on exposure to light
(c) It has to be stored in plastic or wax lined glass bottles in dark
(d) It has to be kept away from dust
Show Answer
Solution:
- $\mathrm{H}{2} \mathrm{O}{2}$ acts as an oxidising as well as reducing agent, because oxidation number of oxygen in $\mathrm{H}{2} \mathrm{O}{2}$ is -1 . So, it can be oxidised to oxidation state 0 or reduced to oxidation state -2 .
$\mathrm{H}{2} \mathrm{O}{2}$ decomposes on exposure to light. So, it has to be stored in plastic or wax lined glass bottles in dark for the prevention of exposure. It also has to be kept away from dust.
