The volume of 1 mol of a gas at standard temperature and pressure is .

Options

A. 11.2 litre
B. 22.4 litres
C. 100 litre
D. none of these

Explanation

To solve the question regarding the volume of 1 mole of a gas at standard temperature and pressure (STP), we can follow these steps:

### Step-by-Step Solution:

1. **Understanding STP**:
- Standard Temperature and Pressure (STP) is defined as a temperature of 0 degrees Celsius (273.15 K) and a pressure of 1 atmosphere (atm).

2. **Volume of a Gas at STP**:
- At STP, it is a well-known fact in chemistry that one mole of an ideal gas occupies a specific volume.

3. **Identifying the Volume**:
- The volume of one mole of an ideal gas at STP is 22.4 liters.

4. **Conversion to Milliliters**:
- Since 1 liter is equal to 1000 milliliters, we can convert 22.4 liters to milliliters:
\[ 22.4 \text{ liters} = 22.4 \times 1000 \text{ ml} = 22400 \text{ ml} \]

5. **Final Answer**:
- Therefore, the volume of 1 mole of a gas at standard temperature and pressure is 22.4 liters or 22,400 milliliters.

### Conclusion:
The answer to the question is that the volume of 1 mole of a gas at standard temperature and pressure is 22.4 liters or 22,400 ml.

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