`KO_(2)` is used in oxygen cylinders in space and submarines because it

Options

A. Asorbs `CO_(2)` and increases `O_(2)` content
B. Elminates moisture
C. Absorbs `CO_(2)`
D. Produces ozone

Explanation

To solve the question regarding why KO₂ (potassium superoxide) is used in oxygen cylinders in space and submarines, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Compound**:
- KO₂ is known as potassium superoxide. It is a compound that contains potassium (K) and oxygen (O).

2. **Understand the Function of KO₂**:
- Potassium superoxide has the unique property of reacting with carbon dioxide (CO₂) to produce oxygen (O₂). This is particularly useful in closed environments like submarines and space missions where maintaining breathable air is crucial.

3. **Write the Reaction**:
- The reaction of KO₂ with carbon dioxide can be represented as follows:
\[ 4 KO₂ + 2 CO₂ \rightarrow 4 K₂CO₃ + 3 O₂ \]
- In this reaction, KO₂ absorbs CO₂ and releases O₂.

4. **Analyze the Products**:
- The products of the reaction are potassium carbonate (K₂CO₃) and oxygen (O₂). This indicates that KO₂ not only absorbs CO₂ but also increases the oxygen content in the environment.

5. **Conclusion**:
- Therefore, KO₂ is used in oxygen cylinders in space and submarines because it absorbs carbon dioxide and releases oxygen, which is essential for sustaining life in confined spaces.

### Final Answer:
KO₂ is used in oxygen cylinders in space and submarines because it absorbs CO₂ and increases O₂ content.

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