Chemical Engineering > GATE 2021 > Activity Coefficients
A binary liquid mixture consists of two species 1 and 2. Let γ and x represent the activity coefficient and the mole fraction of the species, respectively. Using a molar excess Gibbs free energy model, In γ1 vs. x1 and In γ2 vs. x1 are plotted. A tangent drawn to the In γ1 vs. x1 curve at a mole fraction of x1=0.2 has a slope =-1.728.
The slope of the tangent drawn to the In γ2 vs. x1 curve at the same mole fraction is _______ (correct to 3 decimal places).
The slope of the tangent drawn to the In γ2 vs. x1 curve at the same mole fraction is _______ (correct to 3 decimal places).
Correct : 0.432
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