A mixture containing equimolar quantities of a pair of enantiomers is called a RACEMIC MIXTURE. A racemic mixture is represented as (+) or sometimes dl, e.g. (±)-glucose or d glucose. A racemic mixture is optically inactive. 20. How is the racemic mixture of alanine represented?
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.
![A mixture containing equimolar quantities of a pair of enantiomers is called a RACEMIC
MIXTURE. A racemic mixture is represented as (+) or sometimes dl, e.g. (+)-glucose or dt
glucose. A racemic mixture is optically inactive.
20. How is the racemic mixture of alanine represented?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5eae5298-a32e-4919-9fcd-8c855f0e7c2f%2Fe0315197-3ded-4e91-834d-974a33907a79%2F7v0tv75_processed.jpeg&w=3840&q=75)
![For example, alanine is a chiral amino acid that has two enantiomers: (+)-alanine and (-)-alanine.
These two are optical isomers.
NH2
NH2
4.
One of the most important properties of chiral
molecules in solution is their effect on plane-
polarized light, this effect is called optical activity.
-C H
2
COOH
HOOC
CH
When an enantiomer rotates a plane-polarized light
in the positive direction or clockwise, it is
dextrorotary (+ or d), while for a negative direction
or counterclockwise, it is levorotary (- or l)
(+)-Alanine
(-)-Alanine
Alanine is a chiral amino acid that has two
enantiomers: (+)-alanine and ()-alanine. These two are
optical isomers.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5eae5298-a32e-4919-9fcd-8c855f0e7c2f%2Fe0315197-3ded-4e91-834d-974a33907a79%2F77ooo3_processed.jpeg&w=3840&q=75)
![](/static/compass_v2/shared-icons/check-mark.png)
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
![Chemistry](https://www.bartleby.com/isbn_cover_images/9781305957404/9781305957404_smallCoverImage.gif)
![Chemistry](https://www.bartleby.com/isbn_cover_images/9781259911156/9781259911156_smallCoverImage.gif)
![Principles of Instrumental Analysis](https://www.bartleby.com/isbn_cover_images/9781305577213/9781305577213_smallCoverImage.gif)
![Chemistry](https://www.bartleby.com/isbn_cover_images/9781305957404/9781305957404_smallCoverImage.gif)
![Chemistry](https://www.bartleby.com/isbn_cover_images/9781259911156/9781259911156_smallCoverImage.gif)
![Principles of Instrumental Analysis](https://www.bartleby.com/isbn_cover_images/9781305577213/9781305577213_smallCoverImage.gif)
![Organic Chemistry](https://www.bartleby.com/isbn_cover_images/9780078021558/9780078021558_smallCoverImage.gif)
![Chemistry: Principles and Reactions](https://www.bartleby.com/isbn_cover_images/9781305079373/9781305079373_smallCoverImage.gif)
![Elementary Principles of Chemical Processes, Bind…](https://www.bartleby.com/isbn_cover_images/9781118431221/9781118431221_smallCoverImage.gif)