KO2 (potassium super oxide) is used in oxygen cylinders in space and submarines because it
Correct answer: A. Absorbs CO2 and increases O2 content
- A. Absorbs CO2 and increases O2 content
- B. Eliminates moisture
- C. Absorbs CO2
- D. Produces ozone
Explanation
Potassium superoxide (KO2) plays a vital role in environments like space and submarines by regenerating breathable air. The reaction of 2KO2 + 2H2O → 2KOH + H2O2 + O2 demonstrates how KO2 utilizes moisture to produce oxygen and potassium hydroxide, which absorbs exhaled carbon dioxide. This dual functionality is why it is used in oxygen cylinders in enclosed spaces. Option A is correct because it emphasizes this dual role. Option B is incorrect as its main purpose is not moisture elimination. Option C is partially correct but overlooks the crucial oxygen production aspect. Option D is incorrect because KO2 does not generate ozone.
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About s-Block and p-Block Elements
The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.
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