Solubility of Carbon Dioxide
This demo demonstrates the temperature dependence of the solubility of carbon dioxide in water. The solubility of gases decreases with increased temperature and agitation. This demo works well as a humorous skit with one instructor enjoying a cold drink while the other gets doused!
Curriculum Notes
This demo works well in a unit that deals with solutions.
Lead Time
One day of lead time is required for this project.
Materials
two 20-oz. bottles of carbonated water (This demo is a lot cleaner if you use one of those flavored seltzer water rather than soda pop.)
Procedure
Cool one of the bottles in a refrigerator. Warm one of the bottles in a hot tap water bath. Shake the warm bottle "offstage" before opening!
Safety Precautions
Don't get wet.
