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Coordination Complexes

Copper sulpha...

Question

Copper sulphate solution react with KCN gives:

K_{3} [C u (C N)_{4}]

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C u C N

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C u (C N)_{2}

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K_{2} [C u (C N)_{4}]

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Solution

The correct option is A $K_{3} [C u (C N)_{4}]$
(i) $C u S O_{4} + 2 K C N \to K_{2} S O_{3} + C u (C N)_{2} Cupric cyanide$
(ii) $2 C u (C N)_{2} \to 2 C u C N + (C N)_{2}$
(iii) $3 K C N + C u C N \to K_{3} [C u (C N)_{4}] Potassium Cuprocyanide$
Therefore reaction of KCN with CuSO $_{4}$ results in formation of $K_{3} [C u (C N)_{4}]$

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Similar questions

Which compound is formed when an excess of $K C N$ is added to an aqueous solution of copper sulphate?

K F

H F

K H F_{2}

K^{+}, F^{-}

H^{+}

K^{+}, F

H F

K^{+}

[H F_{2}]^{-}

[K H F]^{+}

F^{-}

K C N

C u (C N)_{2}

K_{2} [C u (C N)_{4}]

K [C u (C N)_{2}]

K_{3} [C u (C N)_{4}]

Copper sulphate solution reacts with KCN to give :

C u S O_{4}

[C u (C N)_{4}]^{2 -}

H_{2} S

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