The ideal gas law begins to break down:

Question

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The ideal gas law assumes no intermolecular forces and that the volume of the gas particles themselves is negligible. It begins to break down under conditions where these assumptions are no longer valid, such as at low temperatures (where attractive forces become more significant), high pressures (where the volume of the gas particles becomes significant), and generally when the attractive forces between molecules cannot be ignored.

The Ideal Gas Law Begins to Break Down