Can air act as ideal gas?

Answer 1

At SATP or STP, Generally yes. Dry air contains roughly (by volume):

* 78.08% nitrogen * 20.95% oxygen * 0.93% argon * 0.038% carbon dioxide All the above are relatively small, light, non-polar molecules, characteristics mimicking an ideal gas.

At normal ambient conditions such as standard temperature and pressure, most real gases behave qualitatively like an ideal gas. Generally, deviation from an ideal gas tends to decrease with higher temperature and lower density, as the work performed by intermolecular forces becomes less significant compared with the particles' kinetic energy, and the size of the molecules becomes less significant compared to the empty space between them.

The ideal gas model tends to fail at lower temperatures or higher pressures, when intermolecular forces and molecular size become important. At some point of low temperature and high pressure, real gases undergo a phase transition, such as to a liquid or a solid. The model of an ideal gas, however, does not describe or allow phase transitions. These must be modeled by more complex equations of state.

Answer 2

Yes, under certain conditions such as low pressure and high temperature, air can behave as an ideal gas. This means that the gas molecules are assumed to have no volume and there are no intermolecular forces between them. However, at normal conditions of pressure and temperature, air deviates from the ideal gas behavior.

Answer 3

At low enough pressures and high enough temperatures it can be approximated as one yes.

Answer 4

yes it can.

Answer 5

yes it is