The solubility of oxygen is

Options

A. 20 - 25 times higher than carbon dioxide
B. 20 - 25 times lower than carbon dioxide
C. 10 - 15 times higher than carbon dioxide
D. 10 - 15 times lower than carbon dioxide

Answer

To solve the question regarding the solubility of oxygen, we will analyze the options provided and determine the correct answer step by step.

### Step-by-Step Solution:

1. **Understanding Solubility**:
- Solubility refers to the ability of a substance (in this case, a gas) to dissolve in a solvent (like water). In biological systems, the solubility of gases like oxygen and carbon dioxide is crucial for processes such as respiration.

2. **Comparing Oxygen and Carbon Dioxide**:
- It is known that carbon dioxide is more soluble in water than oxygen. This means that for the same conditions, carbon dioxide will dissolve in water to a greater extent than oxygen.

3. **Analyzing the Options**:
- **Option 1**: "20 to 25 times higher than carbon dioxide."
- This option is incorrect because it suggests that oxygen is more soluble than carbon dioxide.
- **Option 2**: "20 to 25 times lower than carbon dioxide."
- This option suggests that oxygen is significantly less soluble than carbon dioxide, which aligns with the known scientific fact.
- **Option 3**: "10 to 15 times higher than carbon dioxide."
- This option is also incorrect for the same reason as Option 1.
- **Option 4**: "10 to 15 times lower than carbon dioxide."
- While this option is partially correct, it does not accurately reflect the extent of the difference in solubility as well as Option 2.

4. **Conclusion**:
- Based on the analysis, the correct answer is **Option 2: 20 to 25 times lower than carbon dioxide**. This accurately reflects the solubility comparison between oxygen and carbon dioxide.