by Siete Media Question by Quimby: Why do I get varied results with Copper electrolysis? I have tried copper electrolysis several times using pennys and various batteries (1.5 v to 9 v). Sometimes I get a brownish dark green solution and other times I get a blueish green solution (what I expected). I know I am getting a Copper Chloride, but why the difference in color? The only other ingediants I use is salt. Best answer: Answer by physandchemteach1) Perhaps you are getting Cu2+ ions (blueish...