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Demonstrate Phase Changes of CO2 - Demonstration Kit

Demonstrate Phase Changes of CO2 - Demonstration Kit, AP4505
Catalog Number
Demonstrate Phase Changes of CO2 - Demonstration Kit
Product Description

By: Walter Rohr, Retired
Eastchester High School, Eastchester, NY

An ingenious idea to introduce and demonstrate phase diagrams and triple point using dry ice. At atmospheric pressure carbon dioxide exists only as a solid or gas. However, in a closed system, liquid carbon dioxide will exist when the pressure exceeds 5 atmospheres. The triple point is when all three states of carbon dioxide (solid, liquid, and gas) are simultaneously present in a closed system.
Using a unique device called a Triple Point of CO2 Apparatus, all three phases of CO2 can now be easily and safely observed. The apparatus comes with a large pressure gauge to monitor the pressure changes in the apparatus. This is a terrific lab activity. Enough reusable material is included to perform this demonstration an unlimited number of times.
Concepts: Equilibrium, phase diagrams, triple point, sublimation.
Time Required: 20 minutes
Materials Provided: Triple point of CO2 apparatus, detailed instructions and teaching notes.
Note: Dry ice is required but not provided.


Dry Ice Maker
Make dry ice whenever you need it with this easy-to-use compact dry ice maker. Simply connect a 50-lb liquid CO2 cylinder and in a few minutes you’ll have a 250- to 350-g loosely packed block of dry ice. One 50-lb cylinder of CO2 can make 10–16 blocks...
Additional Resources
No Additional Resources at the time.
Flinn Catalog/Reference Manual Page 360
P.O. Box 219, Batavia, IL60510



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