Electrochemistry Can't battery acid?

[Axlrod2]

I tried steve's reverse electroplating system and just eat up the copper. I used battery acid. After reading some posts on here I thinking I should use almost pure sulfuric acid?

 

[acpeacemaker]

It's the moisture in the battery acid. It has to be evaporated down "a lot" and it can be a huge pain. Drain cleaner's that hold virgin sulfuric are around 98%.

 

[Geo]

battery acid can be used, but first, it has to be evaporated to 1/3 its original volume. Caution : hot concentrated sulfuric acid can cause sever chemical burns and will cause blindness on contact with eyes.

 

[Axlrod2]

Ok thanks

 

[Axlrod2]

The gold just turns into black dust the will filter out? Then I was thinking of "cleaning" it with mautric acid. How's that sound ?

 

[Geo]

The gold just turns into black dust the will filter out? Then I was thinking of "cleaning" it with mautric acid. How's that sound ?

sounds like a plan. a wash in warm muriatic acid will remove the copper contamination, depending on amount, it could remove it all.

 

[lazersteve]

Search the forum for my Post "Black Powder from the Cell' fro details on dealing with the cell once it's full. You can find the post quickly via the Guided Tour --Reactions List.

Steve

 

[Axlrod2]

What kinds of gases does this process give off?

 

[Geo]

hydrogen, which can be explosive so work in a well ventilated room or outside.

 

[Axlrod2]

Does the gold have to touch the copper?

 

[Geo]

if you use a copper basket, then the gold plated material must touch the copper.