What kind of gases does the ideal gas law apply to?

The ideal gas law is best applied to ideal gases, which are defined as hypothetical gases that perfectly follow the gas laws without deviations. This means that the gas molecules have no volume and experience no intermolecular forces. In reality, all gases deviate from ideal behavior to some extent due to these factors, especially under conditions of high pressure and low temperature where gas molecules are closer together.

The ideal gas law is most accurate when the gas behaves ideally, which typically occurs under conditions of low pressure and high temperature where intermolecular interactions are minimized and the volume of the gas molecules themselves is small compared to the volume of their container. Thus, the ideal gas law is most applicable to gases that exhibit negligible interactions, aligning with the characteristics of an ideal gas.