In a gas equation, `PV = RT, V` refers to the volume of

Options

A. any amount of gas
B. one gram of gas
C. one gram mole of gas
D. one litre of the gas

Explanation

To solve the question regarding the ideal gas equation \( PV = RT \) and what the volume \( V \) refers to, we can break it down step by step:

### Step-by-Step Solution:

1. **Understanding the Ideal Gas Law**:
The ideal gas law is given by the equation \( PV = nRT \), where:
- \( P \) = pressure of the gas,
- \( V \) = volume of the gas,
- \( n \) = number of moles of the gas,
- \( R \) = universal gas constant,
- \( T \) = temperature of the gas in Kelvin.

2. **Identifying the Variables**:
In the equation \( PV = RT \), we can see that \( V \) is the volume of the gas. However, we need to clarify what kind of volume this refers to.

3. **Relating to Moles**:
From the ideal gas equation \( PV = nRT \), if we set \( n = 1 \) mole, we can simplify the equation to \( PV = RT \). This indicates that the volume \( V \) corresponds to the volume occupied by 1 mole of gas at the specified conditions of pressure and temperature.

4. **Conclusion**:
Therefore, in the context of the question, the volume \( V \) in the equation \( PV = RT \) refers specifically to the volume of **1 mole of gas**.

### Final Answer:
The volume \( V \) in the equation \( PV = RT \) refers to the volume of **1 mole of gas**.