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.
Label each of the following chiral centers as R or S.
![The image displays a series of chemical structures, each labeled with a letter from "s" to "x". Here's a detailed transcription and explanation of each structure:
**Chemical Structures:**
- **s.** A cyclohexane ring with a single bond extending from the ring to the top right side, indicating a substituent. The substituent is shown with a wedge, suggesting a specific stereochemistry (coming out of the plane).
- **t.** A cyclohexane ring with a wedge bond indicating a substituent on one side, and an additional branched substituent on the ring extending to the right (tert-butyl group).
- **u.** A cyclohexane ring substituted with a hydroxyl group (OH) on the top, with the stereochemistry indicated by a wedge bond. There is also a double bond (alkene) extending to the right side.
- **v.** A linear chain of carbon atoms showing a bromine (Br) and chlorine (Cl) atom as substituents on adjacent carbon atoms, with both shown using wedge bonds to indicate stereochemistry.
- **w.** A linear structure with a triple bond (alkyne) and a single carbon atom shown extending upwards with stereochemical indication (wedge).
- **x.** A more complex structure with a cyclopentane ring and an alkene group, with the bond stereochemistry of the double bond indicated by wedge and dash notation.
Each structure is carefully drawn with emphasis on stereochemistry, which is indicated by the use of wedge and dash bonds. These bonds represent three-dimensional positioning, crucial for understanding the spatial arrangement of atoms and the resulting properties of these compounds in organic chemistry.
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