5. A 7.25x104 M solution of Potassium cyanide (KCN) has a transmittance of 45.2% when measured in a 2 cm cell at a wavelength of 525 nm. Calculate (a) the absorbance of this solution; (b) the molar absorptivity of KMnO4.

5. A 7.25x104 M solution of Potassium cyanide (KCN) has a transmittance of 45.2% when measured in a 2 cm cell at a wavelength of 525 nm. Calculate (a) the absorbance of this solution; (b) the molar absorptivity of KMnO4.

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter13: An Introduction To Ultraviolet-visible Molecular Absorption Spectrometry

Section: Chapter Questions

Problem 13.25QAP

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Spectroanalytical Methods

Spectroanalytical methods measure the wavelength and intensity of radiations that are either emitted or absorbed by a molecular or atomic species. These methods are useful for evaluating the electronic or atomic arrangement of the molecules of a given analyte.

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5. A 7.25x104 M solution of Potassium cyanide (KCN) has
a transmittance of 45.2% when measured in a 2 cm cell
at a wavelength of 525 nm. Calculate (a) the absorbance
of this solution; (b) the molar absorptivity of KMNO4.

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