Solid-Solid-Liquid Phase Diagrams: Example Problems

Try to solve these problems before watching the solutions in the screencasts.

Example Problem 1

Determine the mole fraction in equilibrium of the liquid in the liquid-solid Si phase at the point shown on the graph.  

overall composition, zSi =0.70,  xSi in liquid = 0.62, xSi in solid = 1.0

An example problem over complex phase diagrams.
Example Problem 2

One mole of a solid at 140ºC, with an overall mole fraction of component B of 0.70, is heated until 0.40 moles of liquid forms. Use the temperature-mole fraction phase diagram below to determine the phases present, their composition, and their temperature.

Image to help understand an example problem in the Solid-Solid-Liquid Phase Diagrams module