CheMagic Demonstration Video: Electrolysis
Electrolysis: In developing our CheMagic presentation, we worked for many months to come up with a demonstration that illustrates ELECTROLYSIS in a manner that is visible to the audience. This video is our result. We simply drop a battery into a solution of potassium iodide and some laundry starch from a spray can. After a few seconds, elemental iodine can be observed streaming from the anode of the battery due to the oxidation of iodide. The starch acts to visualize iodine by forming the blue-black iodine-starch complex.