Partially Miscible Liquids

A temperature-composition diagram is shown for two liquids (
A
,
B
) that are only partially miscible within the region enclosed by the orange and pink curve. Each phase in the two-phase region contains both
A
and
B
; the
α
phase (represented by the pink line, mole fraction
α
x
A
) is enriched in
A
and the
β
phase (orange line,
β
x
A
) is enriched in
B
. Outside the phase envelope,
A
and
B
are completely miscible. Sliders for temperature and overall mole fraction of
A
move the black dot around the diagram. The sizes of the rectangles at the top for pure
A
and pure
B
are proportional to the overall mole fraction of that component. The sizes of the containers on the right are proportional to the amounts of the phases (either
α
,
β
, or a single miscible phase) in equilibrium, and the mole fractions are represented by the relative numbers of green (
A
) and blue (
B
) circles.

Details

The screencast video at[1] explains how to use this Demonstration.

References

[1] Partially-Miscible Liquids. www.colorado.edu/learncheme/thermodynamics/PartiallyMiscibleLiquids.html.

External Links

Lever Rule Applied to Phase Diagram for Partially Miscible Liquids

Permanent Citation

Rachael L. Baumann, John L. Falconer, Nathan S. Nelson
​
​"Partially Miscible Liquids"​
​http://demonstrations.wolfram.com/PartiallyMiscibleLiquids/​
​Wolfram Demonstrations Project​
​Published: April 28, 2015