The temperature at which the volume of a gas is zero

Options

A. `0^(@)C`
B. `0K`
C. `0^(@)C`
D. None of these.

Answer

To solve the question regarding the temperature at which the volume of a gas is zero, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Gas Behavior**:
- Gases expand to fill their containers and have a volume that is dependent on temperature and pressure. As temperature decreases, the kinetic energy of gas molecules also decreases.

2. **Theoretical Limit**:
- According to the ideal gas law (PV = nRT), if the volume (V) of a gas is to be zero, then either the pressure (P) must be zero or the temperature (T) must be absolute zero (0 Kelvin).

3. **Absolute Zero**:
- Absolute zero is defined as 0 Kelvin, which is equivalent to -273.15 degrees Celsius. At this temperature, the motion of gas molecules theoretically comes to a complete stop, leading to a volume of zero.

4. **Conclusion**:
- Therefore, the temperature at which the volume of a gas is zero is 0 Kelvin.

5. **Final Answer**:
- The correct answer is option B: 0 Kelvin.