Apply the criterion for inherent instability of a single liquid phase to determine the composition range at which the system in Example 8.19 will spontaneously split into two phases.

Example 8.19

Calculate the equilibrium composition of the two liquid phases in a binary mixture of methyl diethylamine

(a) and water

(b) at 1 bar and 20°C. Solve this problem in two ways; by graphical methods and by using a computer program to solve it numerically. The following three-suffi x Margules parameters have been obtained for this binary system:

Transcribed Image Text:

and B = -384 [J/mol] A = 6349 [J/mol] and