Is disaccharide “4” a reducing sugar

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Is disaccharide “4” a reducing sugar?

 
This image contains six chemical structures, each numbered from 1 to 6, which are likely carbohydrates.

**1. Linear Structure:**
- Shows a vertical arrangement with the following groups:
  - **Top**: CH₂OH
  - **Second**: C=O (double bond)
  - **Third**: HO - H
  - **Fourth**: H - OH
  - **Fifth**: H - OH
  - **Bottom**: CH₂OH

**2. Haworth Projection:**
- A cyclic, planar representation of a hexose sugar ring.
- Features hydroxyl groups (-OH) and hydrogen atoms (H) attached to each carbon in the ring.

**3. Hexose Ring:**
- Another cyclic structure similar to structure 2.
- Shows different orientations of hydroxyl groups compared to structure 2.

**4. Disaccharide:**
- Two hexose rings connected by an oxygen bridge.
- Each ring has hydroxyls and hydrogens on carbons, connected at one point through an oxygen (glycosidic linkage).

**5. Trisaccharide:**
- Three connected hexose rings forming a longer chain, with each joined by oxygen bridges.
- Each ring maintains the presence of hydroxyl and hydrogen atoms.

**6. Trisaccharide (Different Formation):**
- Another variation of a trisaccharide, displaying a different structural arrangement or linkage than structure 5.

These structures denote the carbohydrate classification, showcasing linear and cyclic forms, as well as simple sugars (monosaccharides), double sugars (disaccharides), and complex sugars (trisaccharides).
Transcribed Image Text:This image contains six chemical structures, each numbered from 1 to 6, which are likely carbohydrates. **1. Linear Structure:** - Shows a vertical arrangement with the following groups: - **Top**: CH₂OH - **Second**: C=O (double bond) - **Third**: HO - H - **Fourth**: H - OH - **Fifth**: H - OH - **Bottom**: CH₂OH **2. Haworth Projection:** - A cyclic, planar representation of a hexose sugar ring. - Features hydroxyl groups (-OH) and hydrogen atoms (H) attached to each carbon in the ring. **3. Hexose Ring:** - Another cyclic structure similar to structure 2. - Shows different orientations of hydroxyl groups compared to structure 2. **4. Disaccharide:** - Two hexose rings connected by an oxygen bridge. - Each ring has hydroxyls and hydrogens on carbons, connected at one point through an oxygen (glycosidic linkage). **5. Trisaccharide:** - Three connected hexose rings forming a longer chain, with each joined by oxygen bridges. - Each ring maintains the presence of hydroxyl and hydrogen atoms. **6. Trisaccharide (Different Formation):** - Another variation of a trisaccharide, displaying a different structural arrangement or linkage than structure 5. These structures denote the carbohydrate classification, showcasing linear and cyclic forms, as well as simple sugars (monosaccharides), double sugars (disaccharides), and complex sugars (trisaccharides).
Expert Solution
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Reducing and nonreducing sugar: Carbohydrates that contain free aldehyde or ketone groups can act as a reducing agent and are known as reducing sugar. On the other hand, carbohydrates that do not contain free aldehyde or ketone groups cannot act as a reducing agent and are known as nonreducing sugar.

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