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That's an easy one, nitric acid will do that, also hydrochloric acid + hydrogen peroxide, A/P

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โˆ™ 14y ago
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โˆ™ 7mo ago

One common method to remove copper from gold is through a process called cupellation, where the gold-copper alloy is heated in a furnace with lead, which combines with the copper to form a separate layer called "dore." Another method is through electrolysis, where an electric current is passed through the gold-copper alloy in a solution to separate the copper ions from the gold.

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Q: What removes copper from gold?
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