When excess of KCN is added to aqueous solution of copper sulphate a co-ordination compound K x [ Cu ( CN )4] is formed. The value of x is

Question

When excess of KCN is added to aqueous solution of copper sulphate a co-ordination compound K x [ Cu ( CN )4] is formed. The value of x is (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

2 KCN + CuSO 4 longrightarrow Cu ( CN )2+ K 2 SO 4 underset text(unstable)2 Cu ( CN )2 longrightarrow Cu 2( CN )2+( CN )2 Cu 2( CN )2+6 KCN longrightarrow 2 K 3[ Cu ( CN )4]

Q. When excess of $K CN$ is added to aqueous solution of copper sulphate a co-ordination compound $K_{x} [C u (CN)_{4}]$ is formed. The value of $x$ is

$2 K CN + C u S O_{4} ⟶ C u (CN)_{2} + K_{2} S O_{4}$
$(unstable) 2 C u (CN)_{2} ⟶ C u_{2} (CN)_{2} + (CN)_{2}$
$C u_{2} (CN)_{2} + 6 K CN ⟶ 2 K_{3} [C u (CN)_{4}]$

Q. When excess of KCN is added to aqueous solution of copper sulphate a co-ordination compound Kx​[Cu(CN)4​] is formed. The value of x is

2KCN+CuSO4​⟶Cu(CN)2​+K2​SO4​ (unstable)2Cu(CN)2​​⟶Cu2​(CN)2​+(CN)2​ Cu2​(CN)2​+6KCN⟶2K3​[Cu(CN)4​]

Q. When excess of $K CN$ is added to aqueous solution of copper sulphate a co-ordination compound $K_{x} [C u (CN)_{4}]$ is formed. The value of $x$ is

$2 K CN + C u S O_{4} ⟶ C u (CN)_{2} + K_{2} S O_{4}$
$(unstable) 2 C u (CN)_{2} ⟶ C u_{2} (CN)_{2} + (CN)_{2}$
$C u_{2} (CN)_{2} + 6 K CN ⟶ 2 K_{3} [C u (CN)_{4}]$