Which is the best of of separating copper from brass ?
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But if it's just zinc and copper, you can dissolve the brass in hydrochloric acid with air bubbled through it (the air is needed as an oxidizer) and precipitate the copper by reduction with ascorbic acid (the zinc will remain in solution, as ascorbic acid is not a strong enough reducing agent to precipitate it).
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Answer:
But if it's just zinc and copper, you can dissolve the brass in hydrochloric acid with air bubbled through it (the air is needed as an oxidizer) and precipitate the copper by reduction with ascorbic acid (the zinc will remain in solution, as ascorbic acid is not a strong enough reducing agent to precipitate it).
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