Chemical Potentials of Real Gases. Fugacity

recognising that the chemical potentials for most situations invariably take the general form  

P° whilst 8, which is a function of temperature, T, is the chemical potential of the gaseous component, i, when 

Real gases are represented by equation (38.2) above. As these approach behaviour as exhibited by ideal gases which can be represented by equation (20.13), Frame 20, (which when written in terms of chemical potentials takes the form)  

Similarly we can write for any component, i, in a mixture of real gases  

Replacing f/P°) in equation (38.2) with the activity coefficient p correcting the usual pressure term (P/P°) using equation (38.5), we have  

1 Chemical Potential, (realgas) for a Real (Non-Ideal) Gas. Fugacity, f 

Fugacity, /, corresponds to a pressure, P whilst f, the fugacity of a component, i, behaves in a similar way to partial pressure, both adjusted to represent the departure from ideality. / therefore plays the same role for a real gas as pressure, P does for an 

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Chemical Potentials of Real Gases Fugacity, f, Activity, a and Activity Coefficient, [Pg.122]

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