SATHEE: Co-Ordination Compounds Question 54

Co-Ordination Compounds Question 54

Question: $C u S O_{4}$ reacts with KCN solution and forms:

[DPMT 2004]

Options:

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

B) $C u (C N)$

C) $C u {(C N)}_{2}$

D) $K_{4} [C u {(C N)}_{6}]$

Show Answer

Answer:

Correct Answer: A

Solution:

$C u S O_{4}$ on reaction with $K C N$ gives $K_{3} [C u {(C N)}_{4}]$

$2 C u S O_{4} + 10 K C N \to 2 K_{3} [C u {(C N)}_{4}] + 2 K_{2} S O_{4} + {(C N)}_{2}$

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