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2. How many distinct types of carbons exist on the compounds below? Но 3. For the compounds above, indicate any carbon atoms that would have absorbances above 70 pm.

2. How many distinct types of carbons exist on the compounds below? Но 3. For the compounds above, indicate any carbon atoms that would have absorbances above 70 pm.

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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Please answer question 3

**Transcription for Educational Website:** --- **Question 2:** *How many distinct types of carbons exist on the compounds below?* **Compound Structures:** 1. **Structure A:** - A ketone with a branched alkyl chain. The carbonyl group is attached to the second carbon of the chain. 2. **Structure B:** - A methyl-substituted benzene ring (toluene). 3. **Structure C:** - A linear alcohol with a hydroxyl group at the end and a double bond within the carbon chain. 4. **Structure D:** - A phenyl group attached to an aldehyde functional group (benzaldehyde). **Question 3:** *For the compounds above, indicate any carbon atoms that would have absorbances above 70 ppm.* --- **Explanation of Structures:** - **Structure A:** The molecule contains various carbon environments due to branching and the presence of the carbonyl group, which affects the chemical shifts of the carbons. - **Structure B:** The aromatic ring provides unique carbon environments due to resonance, while the methyl group introduces an aliphatic carbon type. - **Structure C:** The presence of a hydroxyl group and a double bond creates distinct environments, with variation in chemical shift caused by the electronegativity of the oxygen and the degree of unsaturation. - **Structure D:** The aromatic ring and the aldehyde group create distinct environments, with the carbonyl group having a significant impact on the chemical shift in NMR spectroscopy. These compounds can be analyzed using NMR (Nuclear Magnetic Resonance) spectroscopy to determine the distinct types of carbon atoms and those with absorbances above 70 ppm.
Transcribed Image Text:**Transcription for Educational Website:** --- **Question 2:** *How many distinct types of carbons exist on the compounds below?* **Compound Structures:** 1. **Structure A:** - A ketone with a branched alkyl chain. The carbonyl group is attached to the second carbon of the chain. 2. **Structure B:** - A methyl-substituted benzene ring (toluene). 3. **Structure C:** - A linear alcohol with a hydroxyl group at the end and a double bond within the carbon chain. 4. **Structure D:** - A phenyl group attached to an aldehyde functional group (benzaldehyde). **Question 3:** *For the compounds above, indicate any carbon atoms that would have absorbances above 70 ppm.* --- **Explanation of Structures:** - **Structure A:** The molecule contains various carbon environments due to branching and the presence of the carbonyl group, which affects the chemical shifts of the carbons. - **Structure B:** The aromatic ring provides unique carbon environments due to resonance, while the methyl group introduces an aliphatic carbon type. - **Structure C:** The presence of a hydroxyl group and a double bond creates distinct environments, with variation in chemical shift caused by the electronegativity of the oxygen and the degree of unsaturation. - **Structure D:** The aromatic ring and the aldehyde group create distinct environments, with the carbonyl group having a significant impact on the chemical shift in NMR spectroscopy. These compounds can be analyzed using NMR (Nuclear Magnetic Resonance) spectroscopy to determine the distinct types of carbon atoms and those with absorbances above 70 ppm.
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