Interrelating the Two Activity Coefficients in a Binary Mixture
The activity coefficient for species 1 in a binary mixture can be represented by
\ln \gamma_{1}=a x_{2}^{2}+b x_{2}^{3}+c x_{2}^{4}where a, b, and c are concentration-independent parameters. What is the expression for \ln \gamma_{2} in terms of these same parameters?