In the process of extraction of gold. Roasted gold ore `+CN^(-)+H_(2)O overset(O_(2))rarr [X]+OH^(-)` `[X]+Znrarr [Y]+Au` Identify the complexes `[X] ` and `[Y]`.A. `X= [Au(CN)_(2)]^(-),Y=[Zn(CN)_(4)]^(2-)`B. `X= [Au(CN)_(2)]^(3-),Y=[Zn(CN)_(4)]^(2-)`C. `X= [Au(CN)_(2)]^(2-),Y=[Zn(CN)_(6)]^(4-)`D. `X= [Au(CN)_(4)]^(-),Y=[Zn(CN)_(4)]^(2-)`

In the process of extraction of gold. Roasted gold ore `+CN^(-)+H_(2)O

1.	In the process of extraction of gold. Roasted gold ore `+CN^(-)+H_(2)O overset(O_(2))rarr [X]+OH^(-)` `[X]+Znrarr [Y]+Au` Identify the complexes `[X] ` and `[Y]`.A. `X= [Au(CN)_(2)]^(-),Y=[Zn(CN)_(4)]^(2-)`B. `X= [Au(CN)_(2)]^(3-),Y=[Zn(CN)_(4)]^(2-)`C. `X= [Au(CN)_(2)]^(2-),Y=[Zn(CN)_(6)]^(4-)`D. `X= [Au(CN)_(4)]^(-),Y=[Zn(CN)_(4)]^(2-)`
Answer» Correct Answer - A `2Au+4CN^(-) + H_(2)O+(1)/(2)O_(2) rarr 2[Au(CN)_(2)]^(-)+2OH^(-)` `2[Au(CN)_(2)]^(-)+Zn rarr [Zn(CN)_(4)]^(2-)+2Au`

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