A binary mixture of species a and b are in liquid–liquid equilibrium at 25°C. This mixture can be described by the two-suffi x Margules equation with A = 7,300 [J/mol]. Assume A does not change with temperature.

(a) Determine the composition of each liquid phase.

(b) Consider a mixture with an overall composition of 2 mol A and 3 mol B. What is the minimum temperature that you need so that the mixture is not unstable and will split into two phases?