What is the concentration of an unknown solution that has an absorbance reading of 0.402 at 425nm place in a cell with a pathlegth of 1.25cm. The molar absorptivity coefficient of 1.58 X 103 L mol- cm-. 2.40 x 10-4 M 1.70 X 10-3 M 2.04 x 10-4 M 1.07 x 10-3 M

What is the concentration of an unknown solution that has an absorbance reading of 0.402 at 425nm place in a cell with a pathlegth of 1.25cm. The molar absorptivity coefficient of 1.58 X 103 L mol- cm-. 2.40 x 10-4 M 1.70 X 10-3 M 2.04 x 10-4 M 1.07 x 10-3 M

Appl Of Ms Excel In Analytical Chemistry

2nd Edition

ISBN:9781285686691

Author:Crouch

Publisher:Crouch

Chapter12: Spectrochemical Methods

Section: Chapter Questions

Problem 2P

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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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		2.40 x 10^-4M
		1.70 X 10^-3 M
		2.04 x 10^-4 M
		1.07 x 10^-3 M

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