Electrolysis of salt solution with iron electrodes

[konishewah]

I was trying to produce Iron oxide through electrolysis. I used an old dc converter for an electric train set I had, a nail (that had rust on it already) on the anode. NaCl was the electrolyte. Well......the solution went from colourless to bluey greeny. After I wiped off the cathode (it was changing colour also lol! a kind of steely orange) I restarted the process, the solution was now turning orange. What the hell is going on?

[woelen]

There already is a thread on this subject.

 

http://www.scienceforums.net/forum/showthread.php?t=15636