O A Oc в A OD Which of the following compounds is a meso compound? H H COOH CH₂ OH OH B HI HO COOH CH₂ OH H С. COOH н-с НО OH H D. НО но- COOH н -H COOH
Carbohydrates
Carbohydrates are the organic compounds that are obtained in foods and living matters in the shape of sugars, cellulose, and starch. The general formula of carbohydrates is Cn(H2O)2. The ratio of H and O present in carbohydrates is identical to water.
Starch
Starch is a polysaccharide carbohydrate that belongs to the category of polysaccharide carbohydrates.
Mutarotation
The rotation of a particular structure of the chiral compound because of the epimerization is called mutarotation. It is the repercussion of the ring chain tautomerism. In terms of glucose, this can be defined as the modification in the equilibrium of the α- and β- glucose anomers upon its dissolution in the solvent water. This process is usually seen in the chemistry of carbohydrates.
L Sugar
A chemical compound that is represented with a molecular formula C6H12O6 is called L-(-) sugar. At the carbon’s 5th position, the hydroxyl group is placed to the compound’s left and therefore the sugar is represented as L(-)-sugar. It is capable of rotating the polarized light’s plane in the direction anticlockwise. L isomers are one of the 2 isomers formed by the configurational stereochemistry of the carbohydrates.
![**Which of the following compounds is a meso compound?**
The image presents four different chemical compounds labeled A, B, C, and D. Each compound's structure is diagrammed with specific attention to the arrangement of atoms and functional groups. Below the structures, there are multiple-choice options (A, B, C, and D) for selecting the correct answer.
### Compound Structures:
- **A:**
```
COOH
|
H-C-OH
|
H-C-OH
|
CH3
```
- **B:**
```
COOH
|
H-C-OH
|
HO-C-H
|
CH3
```
- **C:**
```
COOH
|
H-C-OH
|
HO-C-H
|
F
```
- **D:**
```
COOH
|
HO-C-H
|
HO-C-H
|
COOH
```
### Multiple-Choice Options:
- ⭘ A
- ⭘ C
- ⭘ B
- ⭘ D
### Explanation of the Graphical Structures:
Each compound structure is presented with the functional groups and atoms connected in a specific manner. This particular problem is likely asking to identify which of the given structures is a meso compound. A meso compound possesses multiple stereocenters but also has an internal plane of symmetry, making it achiral overall despite containing chiral centers.
- **For A:** There appears to be no symmetry due to the difference in groups attached to the stereocenters.
- **For B:** The compound has asymmetric connections with different groups attached.
- **For C:** Similar to structure B, asymmetry is present due to the presence of different groups.
- **For D:** This structure shows symmetry, with matching groups on both sides of the compound.
Thus, **Option D** is the meso compound as it has an internal plane of symmetry.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc6184893-1e67-4ed8-9784-fdd0cf2ed60a%2F2896e339-5674-4b2c-ae63-9987f2c74214%2Fhaw2vfw_processed.jpeg&w=3840&q=75)
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