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Question

KO2 is used in oxygen cylinders in space and submarines because it:

A
eliminates moisture
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B
absorbs CO2 only
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C
absorbs CO2 and increases O2 contents
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D
produces ozone
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Solution

The correct option is C absorbs CO2 and increases O2 contents
KO2 absorbs CO2 and increases O2 contents according to the following reaction:
4KO2+2CO22K2CO3+3O2

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