The COSY NMR spectrum of 2-methyl-3-pentanone is shown below. Draw the structure of 2-methyl-3-pentanone and number the proton environments sequentially Cut and paste the COSY spectrum or download the image and save it as a picture file Label each signal in the COSY spectrum according to which proton environment it relates to in the structure of the molecule.

Q: Looking at the NMR graph identify which molecules are present.

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Q: CI- H3C CH3 CH3

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Q: OH OH

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Q: What functional group below gives IR signals at 1700 cm¹ and 2510-3000 cm ¹7 O Ketone O Amide…

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Q: 18. Which signal below corresponds to the protons indicated? | Ci CH H3C (a) (b) CH3 (c) (d)

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Analyzing and Predicting Spectroscopic Data

The interaction of electromagnetic radiation with the structure of molecules in the sample and their study is referred spectroscopy. Several spectroscopic methods are used to acquire sample information, and these methods are proved to be accurate, fast, and non-destructive. The information obtained about the content and composition of molecules from these spectroscopic methods is called spectroscopic data.