Chapter 20, Problem 20.40QP

Interpretation Introduction

Interpretation: The formation constant for ${{\text{[Fe(H}}_{\text{2}}{\text{O)}}_{\text{5}}\text{NCS]}}^{\text{2+}}$ to be calculated.

Concept Introduction:

Crystal field splitting: The energy gap between the splitting of d-orbitals of the metal ion in presence of ligands is known as the crystal field splitting $\text{(Δ)}$. The magnitude of $\text{(Δ)}$ is depends on the nature of metal ions and the ligands.

Reaction of coordination compounds: Complex ion undergoes ligand exchange (or substitution) reactions in solution. The rate of reaction is depends on the nature of metal ions and the ligands.

Formation constant: ${\text{K}}_{\text{f}}\text{=}\frac{{\text{[product]}}_{\text{ eq}}}{{\text{[reactant] }}_{\text{eq}}}$ the formation constant of an equilibrium reaction is the ratio of equilibrium concentration of product by the equilibrium concentration of reactant.