At room temperature and pressure (RTP), what is the approximate volume of one mole of gas?

At room temperature and pressure (RTP), the approximate volume of one mole of an ideal gas is commonly accepted to be around 24 to 25 liters per mole. This value can vary slightly based on the exact definition of room conditions, which typically refers to 20 to 25 degrees Celsius and 1 atmosphere of pressure.

The choice of 25.0 L/mole aligns well with these conditions, reflecting an average value that is widely used in chemistry for calculations involving gases. This concept is essential for understanding gas behaviors, relationships in stoichiometry, and supports the application of the ideal gas law in various scenarios.

The other options either represent volumes that are specific to certain conditions (like 22.4 L for standard temperature and pressure – STP, which is 0 degrees Celsius and 1 atm) or are less accurate based on typical RTP definitions. Thus, the selection of 25.0 L/mole accurately represents the expected volume of a mole of an ideal gas at room temperature and pressure in scientific practice.