Assume that the properties of a mixture can be described by the Clausius equation of state:

$P=\frac{RT}{V_{-}b}$

where the van der Waals mixing rule applies for the constant $b$ :

$b={\displaystyle \underset{i=1}{\overset{c}{}}}{x}_i{b}_i$

and $b_i$ is the constant for pure $i$ at $T,P.$

H

Develop an expression for the fugacity coefficient for component $k$ in this mixture.

Please solve this question correctly. Handwriting is preferable for clear description and understanding. I will give you points :$))$ Thank you!