Chapter 16, Problem 16.30A

Interpretation Introduction

Interpretation:

Concentration of ${\text{Au}}^{\text{+}}$ must be determined from a given solution.

Concept introduction:

• Formation constant of a complex is the equilibrium constant of the reaction in which the complex formation is taking place from central metal ion and ligands.
• Formation constant of a complex reflects the stability of the complex.

Given:

Formation constant of the complex ${\left[\text{Au}{\left(\text{CN}\right)}_{\text{2}}\right]}^{\text{-}}$ as $2\times {10}^{38}$ along with the concentration of $$$\begin{array}{l}\hfill \\ \hfill \end{array}$

${\text{AuNO}}_{\text{3}}$ and $\text{NaCN}$ solution used for complex formation.