Gold copper alloys dissolve in Hcl plus peroxide

[Ariaana]

Hello my friends may be silly question, pardon me
I had some alloy gold and copper, as i think it should be 10 percent gold at least, i started with Hcl and peroxide, step by step, but i saw that all of that about 70 grams, disolved completely there, the solution was green and somehow yellow, goldish yellow, my question is that, is it possiblr that Hcl plus Hydrogen Peroxide disolve gold alloys in some percentage? I have nothing to check the gold in solution right now.

 

[g_axelsson]

Yes, HCl + hydrogen peroxide can dissolve gold. I've used it several times.

Have you tested the solution with stannous? Color of the solution isn't a secure way of testing for gold.

There are a lot of ways to get the gold back from solution.

Göran

 

[lanfear]

What was the copper material with 10% GOLD? that is not a normal alloy. If it was a "gold" blob of metltet E scrap from ebay, there may be little to non gold there in the first place.

Jon