Produce some chlorine yourself!
You can produce some real chlorine gas (a very limited quantity of course) by applying electrolysis on a salt-in-water solution!
Complicated? Not at all. At least not on a 'kitchen-scale' :-) See here how you do it:
Download a full description of the experiment here.
Of course we ONLY use a low voltage power source: a 4.5 Volt battery. Effictive but not expensive!
The electrodes that conduct the current are two standard pencils, sharpened at each side. We fix these via two holes in a piece of cardboard.
The electrodes go into the salted water (tape the cardboard onto the glass for stability) and we connect them to the battery with two stripped electric wires.
The chlorine production starts nearly immediately at the pencil connected to the + pole. At the pencil connected to the - pole, another gas is formed: hydrogen. In the water, a third substance is generated (at low concentration): sodium hydroxide. Smell the swimming pool smell above the glass. You've just produced your own chlorine!
♦ Please respect these safety rules:
- Perform the experiment in a well ventilated room. DO NOT inhale much chlorine, just sniff some above the water.
- As a power source, use ONLY a 4.5V battery
- Do not drink the water afterwards but pour it away in the sink and rinse your sink with clean water
♦ Let us know how it went and you can win a prize! Did it work well? Was it messy or simple? Did you surprise your friends with your own chlorine production? Did you like the experiment? Send us your feedback with the Euro Chlor Contact Form.