Question:
Identify the oxide used as \(\text{CO}_{2}\) adsorbent and oxygen generator from following.
Identify the oxide used as \(\text{CO}_{2}\) adsorbent and oxygen generator from following.
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One compound removes CO2 from exhaled air and releases oxygen in the same reaction.
Updated On: Nov 12, 2026
- \(\text{Na}_{2}\text{O}\)
- \(\text{Na}_{2}\text{O}_{2}\)
- \(\text{K}_{2}\text{O}\)
- \(\text{KO}_{2}\)
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The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept
Breathing apparatus needs a compound that removes exhaled \(\text{CO}_2\) and supplies \(\text{O}_2\) together.
Step 2: Reaction
Potassium superoxide reacts with carbon dioxide: \(4\text{KO}_2+2\text{CO}_2\rightarrow2\text{K}_2\text{CO}_3+3\text{O}_2\).
Step 3: Why the other options fail
The normal oxides \(\text{Na}_2\text{O}\) and \(\text{K}_2\text{O}\) and the peroxide \(\text{Na}_2\text{O}_2\) are not used for this dual role.
Final Answer:
The oxide is \(\text{KO}_2\). \[ \boxed{\text{(D) }\text{KO}_{2}} \]
Breathing apparatus needs a compound that removes exhaled \(\text{CO}_2\) and supplies \(\text{O}_2\) together.
Step 2: Reaction
Potassium superoxide reacts with carbon dioxide: \(4\text{KO}_2+2\text{CO}_2\rightarrow2\text{K}_2\text{CO}_3+3\text{O}_2\).
Step 3: Why the other options fail
The normal oxides \(\text{Na}_2\text{O}\) and \(\text{K}_2\text{O}\) and the peroxide \(\text{Na}_2\text{O}_2\) are not used for this dual role.
Final Answer:
The oxide is \(\text{KO}_2\). \[ \boxed{\text{(D) }\text{KO}_{2}} \]
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