Question

Hydrogen peroxide is used for the preparation of oxygen gas in the laboratory.

• A. True
• B. False

Answer 1

The correct option is A True

Oxygen -

• It is a non-metallic element found in the gaseous state.
• It is a reactive gas and makes up 21% of the air.

Laboratory preparation of oxygen -

• Hydrogen peroxide is decomposed in presence of Manganese dioxide$\left({\mathrm{MnO}}_2\right)$ to produce oxygen.
• $$\begin{gathered} 2{\mathrm{H}}_2{\mathrm{O}}_2\left(\mathrm{l}\right)\stackrel{{\mathrm{MnO}}_2}{\to }2{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)+{\mathrm{O}}_2\left(\mathrm{g}\right) \\ (\mathrm{Hydrogen}(\mathrm{Water})(\mathrm{Oxygen}\left) \\ \mathrm{peroxide}\right) \end{gathered}$$

Therefore, the given statement is true.