OCH; The functional group present in CH;CH, CH is hemiketal hemiacetal ketal acetal

Chemistry In Focus
7th Edition
ISBN:9781337399692
Author:Tro, Nivaldo J.
Publisher:Tro, Nivaldo J.
Chapter6: Organic Chemistry
Section: Chapter Questions
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**Question:**

The functional group present in \( \text{CH}_3\text{CH}_2\text{CH(OH)OCH}_3 \) is:

- O hemiketal
- O hemiacetal
- O ketal
- O acetal

**Description:**

This question is a multiple-choice question commonly found in educational assessments to test knowledge of organic chemistry, specifically functional groups. The structural formula \( \text{CH}_3\text{CH}_2\text{CH(OH)OCH}_3 \) should be identified to determine which functional group is present.

### Explanation:

1. **Hemiketal:**
   - Formed by the reaction of a ketone with an alcohol.
   - Contains a carbon atom bonded to two alkyl/aryl groups, one hydroxyl group (-OH), and one alkoxy group (-OR).

2. **Hemiacetal:**
   - Formed by the reaction of an aldehyde with an alcohol.
   - Contains a carbon atom bonded to one alkyl/aryl group, one hydrogen atom, one hydroxyl group (-OH), and one alkoxy group (-OR).

3. **Ketal:**
   - Formed from hemiketal by the replacement of the hydroxyl group with another alkoxy group (-OR).
   - Contains a carbon atom bonded to two alkyl/aryl groups and two alkoxy groups (-OR).

4. **Acetal:**
   - Formed from hemiacetal by the replacement of the hydroxyl group with another alkoxy group (-OR).
   - Contains a carbon atom bonded to one alkyl/aryl group, one hydrogen atom, and two alkoxy groups (-OR).

Considering the chemical structure \( \text{CH}_3\text{CH}_2\text{CH(OH)OCH}_3 \), the correct answer corresponds to the functional group present in this compound. Select the appropriate option based on your knowledge.

**Note:** There are no graphs or diagrams included with this question that require further explanation.
Transcribed Image Text:**Question:** The functional group present in \( \text{CH}_3\text{CH}_2\text{CH(OH)OCH}_3 \) is: - O hemiketal - O hemiacetal - O ketal - O acetal **Description:** This question is a multiple-choice question commonly found in educational assessments to test knowledge of organic chemistry, specifically functional groups. The structural formula \( \text{CH}_3\text{CH}_2\text{CH(OH)OCH}_3 \) should be identified to determine which functional group is present. ### Explanation: 1. **Hemiketal:** - Formed by the reaction of a ketone with an alcohol. - Contains a carbon atom bonded to two alkyl/aryl groups, one hydroxyl group (-OH), and one alkoxy group (-OR). 2. **Hemiacetal:** - Formed by the reaction of an aldehyde with an alcohol. - Contains a carbon atom bonded to one alkyl/aryl group, one hydrogen atom, one hydroxyl group (-OH), and one alkoxy group (-OR). 3. **Ketal:** - Formed from hemiketal by the replacement of the hydroxyl group with another alkoxy group (-OR). - Contains a carbon atom bonded to two alkyl/aryl groups and two alkoxy groups (-OR). 4. **Acetal:** - Formed from hemiacetal by the replacement of the hydroxyl group with another alkoxy group (-OR). - Contains a carbon atom bonded to one alkyl/aryl group, one hydrogen atom, and two alkoxy groups (-OR). Considering the chemical structure \( \text{CH}_3\text{CH}_2\text{CH(OH)OCH}_3 \), the correct answer corresponds to the functional group present in this compound. Select the appropriate option based on your knowledge. **Note:** There are no graphs or diagrams included with this question that require further explanation.
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