The solubility of gases in liquids:

Options

A. increases with increase in pressure and temperature
B. decreases with increase in pressure and temperature
C. increases with increases in pressure and decrease in temperature
D. decreases with increases in pressure and increase in temperature

Explanation

**Step-by-Step Solution:**

1. **Understanding Solubility of Gases**: The solubility of gases in liquids is influenced by temperature and pressure. It is important to know how these factors affect the amount of gas that can dissolve in a liquid.

2. **Effect of Temperature**: Generally, the solubility of gases in liquids decreases with an increase in temperature. This is because higher temperatures provide more kinetic energy to the gas molecules, allowing them to escape from the liquid phase into the gas phase.

3. **Effect of Pressure**: According to Henry's Law, the solubility of a gas in a liquid is directly proportional to the pressure of that gas above the liquid. This means that as the pressure increases, more gas molecules are forced into the liquid, increasing solubility.

4. **Combining Effects**: From the above points, we can conclude that:
- Increasing temperature decreases gas solubility.
- Increasing pressure increases gas solubility.

5. **Final Conclusion**: Therefore, the correct statement regarding the solubility of gases in liquids is that it increases with an increase in pressure and decreases with an increase in temperature. Thus, the final answer is option C.

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