AP Chemistry / Unit 3: Properties of Substances and Mixtures
3.6 Deviation from Ideal Gas Law
Notes
Real gases deviate at high pressure (particle volume matters) and low temperature (attractions matter).
- Polar or large molecules deviate more.
Practice
Real gases behave most ideally at:
Particles are far apart and fast.
At low temperature, a real gas's pressure is lower than ideal because:
Attractions pull particles inward.
Which gas deviates most from ideal behavior?
Polar with hydrogen bonding.
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