
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Transcribed Image Text:### Identifying Functional Groups in Organic Compounds
#### Question:
What functional group class is present in the substance with the following formula?
```
O
||
H─C─OCH₃
```
#### Options:
- ⭕ aldehyde
- ⭕ ether
- ⭕ carboxylic acid
- ⭕ ester
#### Explanation:
Let's analyze the given chemical structure:
1. **Aldehyde (R-CHO)**: Typically characterized by the presence of a carbonyl group (C=O) bonded to at least one hydrogen atom. In this structure, we see a carbonyl group bonded to a hydrogen (H), signifying an aldehyde group.
2. **Ether (R-O-R')**: Identified by the presence of an oxygen atom connected to two alkyl or aryl groups. In this structure, the oxygen is only connected to one alkyl group (CH₃O-).
3. **Carboxylic Acid (R-COOH)**: Recognized by the presence of a carbonyl group (C=O) along with a hydroxyl group (OH). This structure does not exhibit such a configuration.
4. **Ester (R-COOR')**: Characterized by a carbonyl group (C=O) adjacent to an alkoxy group (O-R), forming R-CO-O-R. This structure partially resembles an ester; however, it lacks the configuration wherein the carbonyl group is connected to two organic groups.
Therefore, the correct answer is:
- ⭕ aldehyde
This structure is recognized as containing an **aldehyde** functional group.
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