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In which region of the IR spectrum would a ketone give a very characteristic band? A) 4000-3000 cm1 B) 2500-2000 cm1 C) 2000-1500 cm 1 D) 1500-1000 cm1 E) Below 1000 cm1

In which region of the IR spectrum would a ketone give a very characteristic band? A) 4000-3000 cm1 B) 2500-2000 cm1 C) 2000-1500 cm 1 D) 1500-1000 cm1 E) Below 1000 cm1

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Title: Identifying Ketone Bands in IR Spectroscopy Question: In which region of the IR (Infrared) spectrum would a ketone give a very characteristic band? Options: A) 4000-3000 cm<sup>-1</sup> B) 2500-2000 cm<sup>-1</sup> C) 2000-1500 cm<sup>-1</sup> D) 1500-1000 cm<sup>-1</sup> E) Below 1000 cm<sup>-1</sup> Explanation: Infrared spectroscopy is a powerful analytical technique used to identify functional groups within a molecule based on their absorption of infrared light at specific wavelengths. Ketones, characterized by the carbonyl group (C=O), exhibit a strong and distinct absorption band. This band is typically observed in the region between 1750-1700 cm<sup>-1</sup>, which falls within option C (2000-1500 cm<sup>-1</sup>).
Transcribed Image Text:Title: Identifying Ketone Bands in IR Spectroscopy Question: In which region of the IR (Infrared) spectrum would a ketone give a very characteristic band? Options: A) 4000-3000 cm<sup>-1</sup> B) 2500-2000 cm<sup>-1</sup> C) 2000-1500 cm<sup>-1</sup> D) 1500-1000 cm<sup>-1</sup> E) Below 1000 cm<sup>-1</sup> Explanation: Infrared spectroscopy is a powerful analytical technique used to identify functional groups within a molecule based on their absorption of infrared light at specific wavelengths. Ketones, characterized by the carbonyl group (C=O), exhibit a strong and distinct absorption band. This band is typically observed in the region between 1750-1700 cm<sup>-1</sup>, which falls within option C (2000-1500 cm<sup>-1</sup>).
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Step 1

The IR spectrum for a ketonic group is:

ranges between 1705cm-1 to 1725 cm-1.

 

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