Undergraduate
Kinetics - The Iodine Clock Reaction (#5)
THE OSCILLATING IODINE CLOCK REACTION
When three colorless solutions are stirred together, the result shortly becomes amber, and then quite suddenly blue. The colorless, amber, and blue sequence of colors is repeated in a cycle of several seconds for some minutes. This is a good "gee whiz" demo. It can also be shown in Chem 480AB as an example of an oscillating reaction.
MATERIALS
Kinetics - The Oscillating Clock Reaction (#3)
Video Link: http://www.youtube.com/watch?v=ilF4Zjvdfh4
THE OSCILLATING IODINE CLOCK REACTION
Kinetics - Catalysis by Cobalt(II) Ion
Catalysis by Cobalt(II) Ion
MATERIALS
- 300mL 8.3% (W/V) potassium sodium tartrate
- 100mL 6% (V/V) hydrogen peroxide
- 25mL 4% (W/V) cobalt(II) chloride hexahydrate