Question 5 • *26-27 CFISD TX-Chemistry A CR
Ideal-gas behavior is most likely to fail when particles are crowded or when intermolecular attractions matter. At very low volumes, particles are close together, so their own volume and interactions are no longer negligible (B). At very low temperatures, particles have less kinetic energy, so attractions can affect their motion more (C); highly polar molecules with strong intermolecular forces also depart from the ideal model (E). High temperatures and very low pressures generally make gases behave more ideally, so A and D are not exceptions.
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