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ChemistryPrinciples of Instrumental Analysis(a) Interpretation: The formula of the complex should be determined. Concept introduction: Slope-ratio method is used for weak complexes, x M + y L ⇌ M x L y When L is in excess, C M = x [ M x L y ] A 1 = ε l [ M x L y ] = ε l C M x When M is in excess, C L = y [ M x L y ] A 2 = ε l [ M x L y ] = ε l C L y Therefore slope of the plot of absorbance versus concentration of M or L gives ε l x or ε l y respectively. The ratio of the two slope will give the combining ratio of M and L. ε l / x ε l / y = y xStart your trial now! First week only $4.99!*arrow_forward*

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7th Edition

Douglas A. Skoog + 2 others

Publisher: Cengage Learning

ISBN: 9781305577213

Chapter 14, Problem 14.17QAP

Interpretation Introduction

**(a)**

**Interpretation:**

The formula of the complex should be determined.

**Concept introduction:**

Slope-ratio method is used for weak complexes,

When L is in excess,

When M is in excess,

Therefore slope of the plot of absorbance versus concentration of M or L gives

The ratio of the two slope will give the combining ratio of M and L.

Interpretation Introduction

**(b)**

**Interpretation:**

The molar absorptivity of the complex and its uncertainty should be determined.

**Concept introduction:**

Slope-ratio method is used for weak complexes,

When L is in excess,

When M is in excess,

Therefore slope of the plot of absorbance versus concentration of M or L gives

The ratio of the two slope will give the combining ratio of M and L.