Consider a ternary system of methane (a), ethane (b), and propane (c) at 25°C and 15 bar. Assume this system can be represented by the virial equation truncated at the second term:

At 25°C, the second virial coeffi cients [cm3/mol] are given by:

(a) Develop an expression for the fugacity coeffi cient of methane in the mixture.

(b) Estimate the fugacity and the fugacity coeffi cient of methane for a mixture with 20% (mole) methane, 30% ethane, and 50% propane.

(c) Repeat parts (a) and (b) using the Lewis fugacity rule.

Transcribed Image Text:

z = 1+ Bmix V