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

step 1 In this problem I can write the reaction as c u .s .o4 plus 2 kcn will react to give cn cn whole

Which compound is formed when excess of KCN is added to an...

Which compound is formed when excess of $\mathrm{KCN}$ is added to an aqueous solution of copper sulphate? (a) $\mathrm{Cu}(\mathrm{CN})_{2}$ (b) $\mathrm{K}_{2}\left[\mathrm{Cu}(\mathrm{CN})_{6}\right]$ (c) $\mathrm{K}\left[\mathrm{Cu}(\mathrm{CN})_{2}\right]$ (d) $\mathrm{K}_{3}\left[\mathrm{Cu}(\mathrm{CN})_{4}\right]$

Which compound is formed when excess of $\mathrm{KCN}$ is added to an aqueous solution of copper sulphate?
(a) $\mathrm{Cu}(\mathrm{CN})_{2}$
(b) $\mathrm{K}_{2}\left[\mathrm{Cu}(\mathrm{CN})_{6}\right]$
(c) $\mathrm{K}\left[\mathrm{Cu}(\mathrm{CN})_{2}\right]$
(d) $\mathrm{K}_{3}\left[\mathrm{Cu}(\mathrm{CN})_{4}\right]$

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Effect of Excess Ligands

The use of an excess of ligands can shift the equilibrium toward the formation of more highly coordinated metal complexes. This principle explains why adding an abundance of a ligand, like cyanide, leads to the generation of complexes with higher ligand counts around the metal center.

Ligand Field Theory

Ligand field theory provides insight into the electronic structure and stability of metal complexes by considering the effects of ligand interactions with the metal's d-orbitals. It is essential for understanding why certain ligands, such as cyanide, can stabilize specific metal ion oxidation states and geometries in aqueous solution.

Coordination Chemistry

Coordination chemistry focuses on compounds where a central metal is bonded to surrounding entities called ligands. This field explains how transition metals form complexes with various ligands, influencing the stability and reactivity of the resulting compounds.

Complex Ion Formation

Complex ion formation is the process by which a central metal ion binds with one or more ligands to form a charged species. This concept is key in understanding how the reaction between a metal salt and an excess of a ligand, such as the cyanide ion, results in a stable complex compound.

Please give Ace some feedback