What functional group class is present in the substance with the following formula? H-C-OCH3 aldehyde ether O carboxylic acid ester O O O O

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### 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.
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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