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For precipitation of silver from the complex [Ag(CN)_(2) ]^(-), zinc is used but not copper. Why? |
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Answer» Solution :copper is ALSO more electropositive than SILVER. Thuspractically copper can also precipitatesilver from`[Ag (CN)_(2)]^(-)`. ButZincis more electropositivewhencompared with copper and ZINC is cheaper than copper . Thus zincis USED commonly to precipitate silver from `[Ag(CN)_(2)]^(-)` |
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