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In the process of extraction of gold, ...

In the process of extraction of gold,
Roasted gold ore `+CN^(-)+H_(2)O overset(O_(2)) to [X] +OH^(-)`
`[X] +Zn to [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)_(4)]^(4-)`

D

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

Text Solution

Verified by Experts

The correct Answer is:
A
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MODERN PUBLICATION-UNIT TEST 6 -Questions
  1. The primary valency of iron in K(4)[Fe(CN)(6)] is :

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  2. The number of isomers exhibited by [Cr(NH(3))(3)Cl(3)] is :

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  3. The complexes [Co(NH(3))(4)Cl(2)]NO(2) and : [Co(NH(3))(4)Cl.NO(2)]C...

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  4. The oxidation number of Pt is Zeise salt is :

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  5. Which of the following is not a pi-bonded complex?

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  6. In the first transition series, the divalent compound having maximum m...

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  7. Which of the following statements, about the advantage of roasting of ...

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  8. The expected spin magnetic moment of Fe^(3+) is :

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  9. Which of the following pairs of atoms have the most similar atomic rad...

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  10. The hydrolysis of TiCl(4) in the presence of HCl gives :

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  11. Which of the following is diamagnetic and tetrahedral ?

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  12. The number of unpaired electrons in a d^(7) tetrahedral configuration ...

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  13. Which of the following ligand causes maximum crystals field splitting ...

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  14. Which of the following is not an organometallic compound?

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  15. In the process of extraction of gold, Roasted gold ore +CN^(-)+H(2)O...

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  16. The molecular shapes of SF(4), CF(4) and XeF(4) are

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  17. Which of the following is the strongest base ?

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  18. The number of sigma-bonds in P(4)O(10) is:

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  19. Which of the following halogens has some metallic character?

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  20. Which of the following description of hybridisation is not correct?

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