The molar absorptivity of the KMnO 4 solution having a transmittance of 0.145 is to be calculated. Concept introduction: The molar absorptivity of a solution is defined as the capacity of a solution to absorb the particular wavelength of light incident on it. In order to calculate the molar absorptivity, first the absorbance of the solution is determined using the Beer’s law. A = − log T Now, the relation between the molar absorptivity, absorbance and concentration of the solution is given by the relation. A = ε b c

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Principles of Instrumental Analysis

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

Principles of Instrumental Analysis

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

Solutions

Chapter 13, Problem 13.5QAP
Interpretation Introduction

Interpretation:

The molar absorptivity of the KMnO4 solution having a transmittance of 0.145 is to be calculated.

Concept introduction:

The molar absorptivity of a solution is defined as the capacity of a solution to absorb the particular wavelength of light incident on it. In order to calculate the molar absorptivity, first the absorbance of the solution is determined using the Beer’s law.

A=logT

Now, the relation between the molar absorptivity, absorbance and concentration of the solution is given by the relation.

A=εbc

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