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Hot and Cold Equilibrium - LeCh,telier’s Principle - Chemical Demonstration Kit

Hot and Cold Equilibrium - LeChâtelier’s Principle - Chemical Demonstration Kit, AP5938
Catalog Number
Hot and Cold Equilibrium - LeCh,telier’s Principle - Chemical Demonstration Kit
Product Description

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

Challenge students to explain the phenomenon observed in this amazingly simple but intriguing demonstration. Pour some violet colored solution into three different test tubes. Place one tube in cold water—the solution turns pink, from the bottom up. Place another tube in hot water—the solution turns a deep blue from the top down. Leave the third tube at room temperature—the solution remains violet. Watch what happens when the tubes are reversed in the hot and cold water baths. Teacher Demonstration Notes included. Enough materials are provided to perform the demonstration seven times.
Concepts: Equilibrium, LeCh,telier’s Principle, density, absorption/transmission.
Time Required: 20 minutes
Materials Provided: Cobalt chloride/alcohol solution, test tubes, and stoppers.


Additional Resources
No Additional Resources at the time.
Flinn Catalog/Reference Manual Page 361
P.O. Box 219, Batavia, IL60510



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