For ethanol(1)-isooctane(2) mixtures at 50 C, the infinitedilution, liquid-phase activity coefficients are and (a) Calculate the

For ethanol(1)-isooctane(2) mixtures at 50^οC, the infinitedilution, liquid-phase activity coefficients are and

(a) Calculate the cnstants A₁₂ and A₂₁ in the van Laar equations.
(b) Calculate the constants L₁₂ and L₂₁ in the Wilson equations.
(c) Using the constants from (a) And (b), Calculate Υ₁ and Υ₂ over the composition range and plot the points as log g versus x1.
(d) How well do the van Laar and Wilson predictions agree with the azeotropic point x₁ = 0.5941, Υ₁  1.44, and Υ₂ = 2.18?
(e) Show that the van Laar equation erroneously predicts two liquid phases over a portion of the composition range by calculating and plotting a y–x diagram like Figure 2.16.

Transcribed Image Text:

,00 Y₁ = 21.17