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In the process of extraction of gold, ...

In the process of extraction of gold,
Roasted gold ore `+CN^(-)+H_2Ooverset(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)_(4)]^(3-), Y=[Zn(CN)_(4)]^(2-)`

C

`X=[Au(CN)_(2)]^(-), Y=[Zn(CN)_(6)]^(4-)`

D

`X=[Au(CN)_(4)]^(-), Y=[Zn(CN)_(4)]^(4-)`

Text Solution

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The correct Answer is:
A
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