Chapter 15, Problem 15.3P

Work Prob. 15.2 for the van Laar equation.
15.2. A binary liquid system exhibits LLE at 25°C. Determine from each of the following sets of miscibility data estimates for parameters $A_{12}$ and $A_{21}$ in the Margules equation at 25°C; (a ) $x_1^a=0.10$ , $x_1^{\beta }=0.90$ ; (b ) $x_1^a=0.20$ , $x_1^{\beta }=0.90$ ; (c ) $x_1^a=0.10$ , $x_1^{\beta }=0.80$ .