Metal Recycling Entrepreneur
First image the copper nitrate is much darker than the sample in the 2nd image indicating another species is present, with the addition of hydrochloric acid to the 2nd sample I now have a green solution with an unidentified precious metal.
Later I'll make some stannous chloride test solution to identify the unknown species.
Last edited by alloy2; 04-06-2022 at 04:15 PM.
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