# (a) Interpretation: The formation constant and the difference in molar absorptivities at 470 nm should be determined using linear regression and the Benesi-Hildebrand equation. Concept introduction: The Benesi-Hildebrand equation is: b Δ A = 1 Δ ε K f C M . 1 C L + 1 Δ ε C M b − length of the solution light passes through ΔA − difference between absorbance with and without the ligand present Δe − difference of the molar absorptivities of complex and metal ion. K f − formation constant C M − concentration of metal ion C L − concentration of ligand.

### Principles of Instrumental Analysis

7th Edition
Douglas A. Skoog + 2 others
Publisher: Cengage Learning
ISBN: 9781305577213

### Principles of Instrumental Analysis

7th Edition
Douglas A. Skoog + 2 others
Publisher: Cengage Learning
ISBN: 9781305577213

#### Solutions

Chapter 14, Problem 14.23QAP
Interpretation Introduction

## (a)Interpretation:The formation constant and the difference in molar absorptivities at 470 nm should be determined using linear regression and the Benesi-Hildebrand equation.Concept introduction:The Benesi-Hildebrand equation is:bΔA=1ΔεKfCM.1CL+1ΔεCMb − length of the solution light passes throughΔA − difference between absorbance with and without the ligand presentΔe − difference of the molar absorptivities of complex and metal ion.Kf − formation constantCM − concentration of metal ionCL − concentration of ligand.

Interpretation Introduction

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