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Chemistry  /  Chem 1333  ·  Atom · ~20 seconds

The Compressibility Factor

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The compressibility factor is the ratio of a gas's actual molar volume to its ideal-gas-predicted molar volume at the same conditions.

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A factor of exactly 1 signals ideal behavior; values above or below 1 signal real-gas deviation.

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A factor below 1 means attraction dominates, shrinking the gas below ideal volume; above 1 means molecular volume dominates instead.