Question

${KO}_2$(potassium super oxide) in used in oxygen cylinders in space and submarines. This is because it:

• A. absorbs ${CO}_2$ and increases $O_2$ content
• B. eliminates moisture
• C. absorbs ${CO}_2$
• D. produces ozone

Answer 1

The correct option is A absorbs ${CO}_2$ and increases $O_2$ content

$K{O}_2$ is used ib the oxygen cylinders in the space and submarines because it absorbs $C{O}_2$ and increases $O_2$ content.

It can be better understood by the following reaction:

$K{O}_2+$ $2C{O}_2$ $\to$ $2K_{2}C{O}_3$ $+3O_2$

we can see that $K{O}_2$ absorbs 2 molecules of $C{O}_2$ and produces 3 molecules $O_2$.

Hence, the correct option is A.