Answered: Question 1. What is the maximum…

Question 1. What is the maximum absorption (max) expected in the UV/Vis spectrum of the natural product shown? (a) 360 nm (b) 355 nm (c) 354 nm (d) 350 nm (e) 345 nm OMe

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

Chapter17: Applications Of Infrared Spectrometry

Section: Chapter Questions

Problem 17.1QAP: Cyclohexnone exhibits its strongest IR absorption hand at 5.86 m, and at this wavelength there is a...

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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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Cyclohexnone exhibits its strongest IR absorption hand at 5.86 m, and at this wavelength there is a linear relationship between absorbance and concentration. (a) Identify the part of the molecule responsible for the absorbance at this wavelength. (b) Suggest a solvent that would be suitable for a quantitative analysis of cyclohexanone at this wavelength. (c) A solution of cyclohexanone (4.0 mg/mL) in the solvent selected in part (b) exhibits a blank-corrected absorbance of 0.800 in a cell with a path length of 0.025 mm. What is the detection limit for this compound under these conditions if the noise associated with the spectrum of the solvent is 0.001 absorbance units?
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