**Right and Equilateral Triangle Ternary Phase Diagrams**

This Demonstration shows two ways to represent a ternary phase diagram, which is used to represent the phase behavior of three-component mixtures. These diagrams are labeled with solute, solvent, and carrier as the three components used is liquid-liquid extraction. Select either a right or an equilateral triangular diagram with buttons. When the "phase envelope" button is unchecked, the diagrams are for a completely miscible system (to better understand the diagrams), but 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 the extract (pink). The black point, which can be dragged to any location within the triangle, represents the composition of the mixture, and each corner of the triangle is a pure component. The mass fractions of each phases(s) present are displayed in a table or tables. Select "solute" (blue), "solvent" (purple), or "carrier" (orange) next to "show labels" 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.