Question

$K{O}_2$ is used in oxygen cylinders in space and submarines beacause it:

• A. Eliminates moisture
• B. Absorbs $C{O}_2$ only
• C. Absorbs $C{O}_2$ and increases the $O_2$ content
• D. Produces ozone

Answer 1

The correct option is C Absorbs $C{O}_2$ and increases the $O_2$ content

Potassium superoxide is an oxygen generator and a carbon dioxide remover.
$4K{O}_2+2C{O}_2\to 2K_{2}C{O}_3+3O_2$
Hence, it is used in oxygen cylinders in space and in submarines.