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The compressibility factor (Z) is used to alter the ideal gas equation to account for the real gas behaviour. The compressibility factor is usually obtained from the compressibility chart.
Additional recommended knowledge
Mathematically, it is defined as,
where, P is the pressure,
For ideal gas behaviour, Z = 1. Ideal gas behaviour occurs when,
The deviation from ideal gas behaviour is largest in the vicinity of the critical point, where Z can be as low as 0.2.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Compressibility_factor". A list of authors is available in Wikipedia.|