Which functional groups are absent in the following molecule? H C ether ester aldehyde carboxylic acid ketone

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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### Which functional groups are absent in the following molecule?

![Molecular Structure](image-link) *(Placeholder for Molecular Structure Image)*

**Options:**
- [ ] ether
- [ ] ester
- [ ] aldehyde
- [ ] carboxylic acid
- [ ] ketone

**Explanation of Functional Groups in the Molecule:**
1. **Aldehyde**: This functional group is present. It is identified by the carbonyl group (C=O) bonded to a hydrogen atom (H).
   
2. **Ketone**: This functional group is not present. Ketones are characterized by a carbonyl group (C=O) bonded to two carbon atoms.

3. **Carboxylic Acid**: This functional group is absent. Carboxylic acids are identified by a carboxyl group (COOH).

4. **Ester**: This functional group is absent. Esters are characterized by a carbonyl group (C=O) bonded to an oxygen atom which is also bonded to another carbon atom (R-COOR').

5. **Ether**: This functional group is absent. Ethers have an oxygen atom connected to two alkyl or aryl groups (R-O-R').

**Answer Key:**
The correct answer is **ester**. Esters are absent from the given molecule.

**Diagram Description:**
The molecular structure displayed includes an aldehyde group (O=C-H) and another carbonyl group, indicating the possible presence of aldehyde functional groups. No groups resembling esters, ethers, carboxylic acids, or ketones are visible in the structure provided.
Transcribed Image Text:### Which functional groups are absent in the following molecule? ![Molecular Structure](image-link) *(Placeholder for Molecular Structure Image)* **Options:** - [ ] ether - [ ] ester - [ ] aldehyde - [ ] carboxylic acid - [ ] ketone **Explanation of Functional Groups in the Molecule:** 1. **Aldehyde**: This functional group is present. It is identified by the carbonyl group (C=O) bonded to a hydrogen atom (H). 2. **Ketone**: This functional group is not present. Ketones are characterized by a carbonyl group (C=O) bonded to two carbon atoms. 3. **Carboxylic Acid**: This functional group is absent. Carboxylic acids are identified by a carboxyl group (COOH). 4. **Ester**: This functional group is absent. Esters are characterized by a carbonyl group (C=O) bonded to an oxygen atom which is also bonded to another carbon atom (R-COOR'). 5. **Ether**: This functional group is absent. Ethers have an oxygen atom connected to two alkyl or aryl groups (R-O-R'). **Answer Key:** The correct answer is **ester**. Esters are absent from the given molecule. **Diagram Description:** The molecular structure displayed includes an aldehyde group (O=C-H) and another carbonyl group, indicating the possible presence of aldehyde functional groups. No groups resembling esters, ethers, carboxylic acids, or ketones are visible in the structure provided.
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