[cmwslw]

Hello everyone, this is my first post. I'm a little confused about what the green precipitate formed is when I do electrolysis of water. I think it might be iron hydroxide because iron oxide forms from the iron electrodes and then reacts with the water. I don't want the precipitate to be formed, so I tried aluminum and it got eaten away. I don't have access to any metals other than household ones, so what would be the best household metal for electrolysis? I've heard of platinum and graphite used but I don't know of a common source of platinum, and I don't know if the clay in pencil lead might mess things up.

[Dan]

A better source of graphite than a pencil lead is a lantern battery.

Take a look here: http://www.theodoregray.com/PeriodicTable/Stories/006.2/index.html

Have fun, be careful.