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Which of the following is formed when ex...

Which of the following is formed when excess of KCN is added to an aqueous solution of copper sulphate?

A

`Cu(CN)_(2)`

B

`K_(2)[Cu(CN)_(4)]`

C

`K[Cu(CN)_(2)]`

D

`K_(3)[Cu(CN)_(4)]`

Text Solution

Verified by Experts

The correct Answer is:
Double salt
When excess of `KCN` is added to an aqueous solution of copper sulphate
`K_(3)[Cu(CN)__(4)` is formed
`CuSO_(4) + 2KCN rarrCu(CN)_(2)+K_(2)SO_(4)`
`2Cu(CN)_(2) rarrCu_(2)(CN)_(2)+(CN)_(2)`
`Cu_(2)(CN)_(2)+6KCNrarr2K_(3)[Cu(CN)_(4)]` .
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Which compound is formed when excess KCN is added to aqueous solution of copper sulphate?

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CENGAGE CHEMISTRY-COORDINATION COMPOUNDS-Archives Single Correct
  1. Among ni(CO)(4),[Ni(CN)(4)]^(2-) and NiCI(4)^(2-) .

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  2. Among the following ions which has the highest paramagntism ? .

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  3. Which of the following is formed when excess of KCN is added to an aqu...

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  4. The geometries of Ni(CO)(4) and Ni(PPh(3))(2)CI(2) are .

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  5. Among the following identify the species with an atom in +6 oxidation ...

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  6. The complex which has no d-electron in the central metal atom is .

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  7. The pair of compounds having metals in their highest oxidation state i...

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  8. The compound having a tetrahedral geometry is .

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  9. The spin magnetic moment of cobalt in the compound Hg[Co(SCN)(4)] is

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  10. Which kind of isomerism is exhibited by octahedral Co(NH(3))(4)Br(2)CI...

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  11. The bond length of C-O bond in carbon monoxide is 1.128A The C-O bond ...

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  12. Among the following metal carbonyls the C-O bond order is lowest in .

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  13. Both [Ni(CO)4] and [Ni (CN)4]^(2-) are diamagnetic The hybridisation...

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  14. The IUPAC name of [Ni(NH(3))(4)][NiCI(4)] is .

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  15. Among the following the coloured compound is .

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  16. The correct structure of ethylenediamineteraacetic acid (EDTA) is .

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  17. The ionisation isomer of [Cr(H(2)O)(4)CI(NO(2))]CI is .

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  18. The complex showing a spin -magnetic momnet of 2.82 BM is .

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  19. Geometrical shapes of the complews formed by the reaction of Ni^(2+) w...

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  20. Among the following complexes (K-P) K(3)[Fe(CN)(6)](K),[Co(Nh(3))(6)...

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