Critical Point – 4C50.00
Critical Opalescence – 4C50.20
- To show the refractive index with phase change.
- A mixture of hexane and methanol is heated above 42.4 degrees C.
- The mixture is clear and appears as one liquid.
- Let the mixture cool to 42.4 degrees C and observe the critical opalescence at the transition temperature by shining a laser beam to the mixture.
- As the mixture continues to cool the two liquids will separate into distinct layers.
Location: Jacobs B122 – Shelf 279