1. State the reasons for reading the absorbance of unknown against reagent water blank or againstthe standard.2. State the reasons for selecting the color of the filter at every wavelength.

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1. State the reasons for reading the absorbance of unknown against reagent water blank or against the standard.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter28: Atomic Spectroscopy

Section: Chapter Questions

Problem 28.8QAP

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Concept explainers

UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.

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1. State the reasons for reading the absorbance of unknown against reagent water blank or against
the standard.
2. State the reasons for selecting the color of the filter at every wavelength.

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