Copper sulphate solution reacts with (KCN) to give | Chemistry | SolveeIt

Question

Copper sulphate solution reacts with $KCN$ to give

$Cu(CN)_2$

$CuCN$

$K_2 [Cu(CN)_4]$

$K_3[Cu(CN)_4]$

Answer

$K_3[Cu(CN)_4]$

Explanation

Solution

$\ce{CuSO4 + 2KCN->Cu (CN)2 + K2SO4}$
$\ce{2Cu (CN)2->Cu2 (CN)2 \,or\, 2CuCN +}$
$\underset{\text{cyanogen}}{\ce{CN - CN}}$
$\ce{CuCN+ 3KCN->K3}$ $\underset{\text{colourless}}{\ce{[Cu(CN)4]}}$

Chemistry Question on d block elements

Solution