Other Definitions
fugacity (dict)
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FugacityIn thermodynamics, the fugacity is a state function of any isothermal system. The fugacity, which has units of pressure, represents the tendancy of a fluid to escape or expand isothermally, and for gases at low pressures where the ideal gas law holds, fugacity is equal to pressure. The ratio between fugacity and pressure is called the fugacity coefficient; therefore, for an ideal gas. The fugacity is defined at fixed temperature by the following differential relation: -
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