When real gases deviate from ideal behavior
Under which conditions does a real gas deviate most from ideal gas behavior?
Answer C: explanation for every choice
A
At low pressure and high temperature, gases behave most ideally.
B
Low pressure keeps molecules far apart, which reduces deviation.
C
Correct. Molecules are crowded together and moving slowly, so their own volume and attractions matter.
D
High temperature and large volume both favor ideal behavior.
TakeawayIdeal: high T, low P. Non-ideal: low T, high P.
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Reviewed 2026-11-05 by a medical student. Spot an error? Report it with question ID cp119.