Electrolysis of molten KNO3+KI

This is one of the videos.
I heated KNO3 and melted it in a steel canister. I added KI so that it would dissolve in the liquid KNO3 (my solvent, 400 °C I guess). Some I2 vapor is formed, meter shows about 2.5 Amps @ 12V, the vapor goes up the glass tubing and cools down. Bingo, an element has been isolated!
Oh yes, the cathode is copper. The anode is carbon.

The other videos:
http://www.youtube.com/watch?v=0pz0qB9yKVk
http://www.youtube.com/watch?v=sdFen-0xM08
http://www.youtube.com/watch?v=2tzgLYmNl6g
http://www.youtube.com/watch?v=0pz0qB9yKVk

Disclaimer : These are my video logs and are intended for others who are interested in chemistry/sciences. Do not attempt these experiments if you are not experienced. If you will, use safety measures and common sense and consider all possible problems that may arise before starting an experiment.

Category:

Science & Technology

Tags:

• iodine
• electrolysis
• potassium iodide
• potassium nitrate
• chemicals
• chemistry
• experiment
• vmelkon

[vmelkon]

@RaikouRide I did not test it this time but normally almost no potassium should form since KNO3 is a strong oxidizer. The last time I had done it adding some water to the cathode makes some minor sparks.