Fugacity and Fugacity Coefficient of Species in Mixture
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The definition of the fugacity of a species in a mixture is parallel to the definition of the pure species fugacity. For an ideal gas mixture the chemical potential is given by eqn. (6.63):
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![]() | (6.63) | ||||||||||||||||||||||||||
Or: ![]() | (6.120) | ||||||||||||||||||||||||||
But ![]() | |||||||||||||||||||||||||||
Thus: ![]() | (6.121) | ||||||||||||||||||||||||||
Or: ![]() ![]() | (6.122) | ||||||||||||||||||||||||||
Using the same idea implicit in eqn. 6.86, we extend eqn. 6.122 to define a similar expression for fugacity of species in a real mixture:
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![]()
| (6.123) |
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