Barometer Made of Dense Aqueous Solution
Description: Video of a ten-foot barometer filled with a solution of potassium tetraiodomercurate (II). The density of the solution is reactive to the size of the barometer.
This demonstration is also available on JCE “Chemistry Comes Alive!” Vol. 2 CD-Rom
Source: JCE software “Chemistry Comes Alive!”
Year: 1999 Vol: 76 Page: 1311
Keywords: Barometer, Potassium tetraiodomercurate (II), Density
Rating: 
Hazard: Low
- Not a lecture experiment; video only
Effectiveness: Average
- Mild effects are seen by audience
- Good reliability
Difficulty: Low
- Simple manipulations
Safety Precautions:
- Use UL approved three-prong plug and outlet
Class: Gas Laws, Video, Physical Chemistry
Division: General
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