The molar excess Gibbs free energy, gE, for a binary liquid mixture at T and P is given by, (gE/RT) = A . x1. x2, where A is a constant. The corresponding equation for ln y1, where y1 is the activity co-efficient of component 1, is__________________?
Correct answer: A
Explanation
The relationship between the excess Gibbs energy and activity coefficients for a binary mixture leads to $\ln \gamma_1 = A x_2^2$.