Chemistry / Unit 7 Chem 1330 short lesson, about 20 seconds
Real Gases Deviate from Ideal Behavior
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The idea
Real gas molecules have volume and attract each other, so real gases deviate most from ideal predictions at high pressure, low temperature.
In practice
Compressed to high pressure, carbon dioxide occupies less volume than the ideal gas law predicts, since its molecules attract each other.
Where people slip
Real gases approximate ideal behavior at low pressure, high temperature — deviation is a matter of degree, not all-or-nothing.
Your place on the trail
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