Chemistry / Chem 1330 · Atom · ~20 seconds
Real Gases Deviate from Ideal Behavior
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Real gas molecules have volume and attract each other, so real gases deviate most from ideal predictions at high pressure, low temperature.
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Compressed to high pressure, carbon dioxide occupies less volume than the ideal gas law predicts, since its molecules attract each other.
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Real gases approximate ideal behavior at low pressure, high temperature — deviation is a matter of degree, not all-or-nothing.