The solubility of a gas in water depends upon

Options

A. Nature of the gas
B. Temperature
C. pressure of the gas
D. All of the above

Answer

To determine the factors that affect the solubility of a gas in water, we can analyze each of the options provided in the question.

### Step-by-Step Solution:

1. **Nature of the Gas**:
- Different gases have different solubilities in water. For example, carbon dioxide is more soluble in water than oxygen due to its chemical properties and ability to interact with water molecules.
- **Hint**: Consider the chemical structure and polarity of the gas molecules.

2. **Temperature**:
- The solubility of gases in liquids typically decreases with an increase in temperature. This is because higher temperatures provide more kinetic energy to the gas molecules, making them more likely to escape from the liquid phase into the gas phase.
- **Hint**: Think about how heating a liquid affects the movement of gas particles.

3. **Pressure of the Gas**:
- 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. Increasing the pressure increases the amount of gas that can dissolve in the liquid.
- **Hint**: Recall the relationship between pressure and solubility as described by Henry's Law.

4. **Nature of the Liquid**:
- While the question specifically asks about the solubility of a gas in water, it's important to note that the nature of the solvent (in this case, water) can also affect solubility. For example, polar gases tend to be more soluble in polar solvents like water.
- **Hint**: Consider how the polarity of the solvent influences the solubility of different gases.

5. **Conclusion**:
- Based on the above analysis, we can conclude that the solubility of a gas in water depends on multiple factors: the nature of the gas, temperature, pressure of the gas, and the nature of the liquid. Therefore, the correct answer is **all of the above** (option D).

### Final Answer:
The solubility of a gas in water depends upon **all of the above**: nature of the gas, temperature, and pressure of the gas.