Reactions corresponding to the formation of chelating ligands are given. Based on bond energies, weather the given reactions will have different enthalpy changes or not. Order of the entropy changes for the given reactions is to be stated. The relationship between Δ S ο and values of formation constants and its usage to explain chelate effect is to be stated. Concept introduction: The electrons in the d orbital of a transition metal split into high and low energy orbitals when ligands are attached to it. The energy difference between these two levels depends upon the properties of both metal and the ligands. If the ligand is strong, then splitting will be high and the complex will be low spin. If the ligand is weak, then splitting will be less and the complex will be high spin. To determine: If the given reactions will have different enthalpy changes or not.

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Chapter 20, Problem 93CP

Interpretation Introduction

Interpretation: Reactions corresponding to the formation of chelating ligands are given.

Based on bond energies, weather the given reactions will have different enthalpy changes or not. Order of the entropy changes for the given reactions is to be stated. The relationship between ΔSο and values of formation constants and its usage to explain chelate effect is to be stated.

Concept introduction: The electrons in the d orbital of a transition metal split into high and low energy orbitals when ligands are attached to it. The energy difference between these two levels depends upon the properties of both metal and the ligands. If the ligand is strong, then splitting will be high and the complex will be low spin. If the ligand is weak, then splitting will be less and the complex will be high spin.

To determine: If the given reactions will have different enthalpy changes or not.

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