Question

Which among the following is used as a source of oxygen in submarine in emergency breathing apparatus?

Options

• rubidium superoxide

• potassium superoxide

• sodium peroxide

• lithium monoxide

Answer 1

potassium superoxide

Explanation:

Potassium superoxide (KO₂) is used as a source of oxygen in submarines in emergency breathing apparatus because it has ability to absorb carbon dioxide and give out oxygen at the same time.

\[\ce{4KO2 + 2CO2 -> 2K2CO3 + 3O2 \uparrow}\]