At standard conditions, what is the pressure measured in the Ideal Gas Law?

In the context of the Ideal Gas Law, which is often represented by the equation ( PV = nRT ), standard conditions typically refer to a pressure of 1 atmosphere (atm) and a temperature of 0 degrees Celsius (273.15 K) for gases. This standardization is crucial because it allows scientists and researchers to compare the behaviors of gases under consistent and known conditions. The definition of standard atmospheric pressure as 1 atm is widely used in various scientific disciplines, ensuring uniformity in experiments and theoretical calculations.

The Ideal Gas Law itself is based on certain assumptions that are valid at standard conditions; for example, it assumes that the gas behaves ideally, meaning that it follows the law accurately under low pressures and high temperatures, which aligns with the conditions defined as standard. Therefore, using 1 atm in calculations provides a reliable foundation for understanding the relationships between pressure, volume, temperature, and the number of moles of an ideal gas.