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Roasted gold ore `+CN^(-)+H_(2)O overset(O_(2)) to [X]+OH^(-)`A. `X=[Au(CN)_(2)]^(-) , Y=[Zn(CN)_(4)]^(2-)`B. `X=[Au(CN)_(4)]^(3-) , Y=[Zn(CN)_(4)]^(2-)`C. `X=[Au(CN)_(2)] , Y=[Zn(CN)_(6)]^(2-)`D. `X=[Au(CN)_(4)]^(3-) , Y=[Zn(CN)_(6)]^(4-)` |
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Answer» Correct Answer - A `2[Au(CN)_(2)]^(-) (aq)+Zn(s) to [Zn(CN)_(4)]^(2-)(aq)+2Au(s)` |
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