Water Electrolysis

Two simple demonstrations of water electrolysis. The first demonstration was learned at the 2010 CSTA Conference at Tara Krisch's (Orange Grove Middle School) presentation on compounds.

[TheBoomer]

i made this uber complicated setup at home and then i see your battery and thumbtack setup nice job lol

[Alexify]

Yes, you'll still get hydrogen on one end, but instead of the oxygen gas on the other end you'll get chlorine gas which be reacting with water and the alkali medium producing some sort of mixture of everything but not oxygen.

[Conlan]

Why don't both the Hydrogen and Oxygen gases flow into the same test tube? Does one only form on the positive lead of the battery and the other on the negative?

[swedensy]

0:56 a mistake.
You cant create more matter when you said H20 --> H2 + 02
You will get double much H then O. That is H2 and 0

[MetalizedCoke]

I had a similar problem, a dirty green fluid on the cathode terminal, which I think was the oxygen and the metal reacting, forming an oxide. However, I do not know what material was the pin made of.

[TheLibby]

@ sciencefix When I did this I used bronze colored push pins and one gas was produced but the other terminal just produced dirty orange water. What kind of push pins should I use?

[TheFalcn]

The thing is, I have to write a full report on Electrolysis as a waste water treatment, and still couldn't understand how would something like this happen.

Thanks anyway

[ItsssQuade]

@xXDalzalaXx you can. But I read that using NaCl, you create hazardous Chlorine gas, so it's best to use a salt that does not form a chlorine ion.

[sciencefix]

They are Kimble Kimax Glass Disposable Culture Tubes. You can get them through Amazon or science supply companies like Ward or Fischer.

[Tesla_Death_Ray]

if you use salt as an electrolyte you get chlorine gas as a byproduct, what do you get with baking soda?

[kox]

It would, but be aware of chlorine gas. I think potassium hydroxide is the best electrolyte and it's pretty cheap too.

[alenvezhakadu]

so you put the test tubes over the pushpins on the water?

[hardwaylearnt]

This is Done with a NaCl salt solution. You get Cl Gas that does the disinfecting.

[paintingoftheweek]

so what would happen if you stick your finger in the water? shock?

[alenvezhakadu]

wait how did you get the beakers to like float over the water
also where do u get those plugs with the clips at the end

[Conlan]

It shall be the Hindenburg II. Make sure you keep any matches as far away as possible :)

[alenvezhakadu]

wait how did you get the beakers to like float over the water

[sciencefix]

The test tubes are sitting on small metal tacks that have been inserted into the plastic cup.

[hatsunemiku]

when i electrolized water, the water turns cloudy.
what should i do? :/
i'm trying to purify D2O now, so please answer.
thanks :)

[dillv]

@sciencefix
so the - pol will makes fire dissapear right ?

and the plus pole makes the fire get bigger ?