What is the molar volume of a gas at room temperature and pressure?

The molar volume of a gas at room temperature and pressure (RTP), which is usually taken to be approximately 20°C (293 K) and 1 atm (101.3 kPa), is commonly accepted to be around 24 dm³. This volume indicates the space that one mole of an ideal gas would occupy under these standard conditions.

At standard temperature and pressure (STP), which is defined as 0°C (273 K) and 1 atm, the molar volume is approximately 22.4 dm³. However, at room temperature and pressure, the increase in temperature allows for greater molecular motion, resulting in a larger volume for the same amount of gas. Thus, the answer aligns with this established value for RTP. Understanding this concept is crucial for various calculations in chemistry, such as those involving gas laws and stoichiometry.