Question

Limitations of the ideal gas law: When does it fail?

Answer 1

For ideal gases, we are assuming that there are no intermolecular forces and that the molecules themselves take up no volume. This is quite true at low pressures, because the spacing between the molecules is so large that they rarely collide. Also low pressure usually means that there is little of them or that the volume of the container is very large, so the space taken up by the actual molecules is negligible