11209

Right and Equilateral Triangle Ternary Phase Diagrams

This Demonstration shows two ways to represent a ternary phase diagram. Ternary phase diagrams are used to represent the phase behavior of three-component mixtures. These diagrams are labeled with solute, solvent and carrier as the three components used in liquid-liquid extraction. Click and drag the black dot within the triangle, this represents the composition of the mixture, and each corner of the triangle is a pure component. The mass fractions of each phase present are displayed in a table. Select either a right or an equilateral triangular diagram with buttons. Uncheck "phase envelope" to view diagrams for a completely miscible system. Selecting "phase envelope" represents the type of diagram important for liquid-liquid extraction. The region inside the phase envelope consists of two phases in equilibrium: the raffinate (green) and extract (magenta). Select solute (blue), solvent (purple) or carrier (orange) to view their mass fractions next to their corresponding axis. Select "grid lines" to display a grid on the phase diagram. These diagrams can also be drawn using mole fractions instead of mass fractions.

THINGS TO TRY

SNAPSHOTS

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DETAILS

The screencast video at [1] explains how to use this Demonstration. For another explanation of how to use an equilateral ternary phase diagram, view the screencast at [2].
References
[1] Right and Equilateral Ternary Phase Diagrams [Video]. (Sep 1, 2016) www.colorado.edu/learncheme/separations/RightandEquilateralTriangleTernaryPhaseDiagrams.html.
[2] Using a Triangular (Ternary) Phase Diagram [Video]. (Jul 30, 2015) www.youtube.com/watch?v=gGYHXhcKM5s.
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