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?

Chemistry: Matter and Change
1st Edition
ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Chapter21: Hydrocarbons
Section: Chapter Questions
Problem 1STP
icon
Related questions
icon
Concept explainers
Question
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?
Transcribed Image Text: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?
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.
Transcribed Image Text: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.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Carbohydrates
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Chemistry: Matter and Change
Chemistry: Matter and Change
Chemistry
ISBN:
9780078746376
Author:
Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:
Glencoe/McGraw-Hill School Pub Co
Chemistry: An Atoms First Approach
Chemistry: An Atoms First Approach
Chemistry
ISBN:
9781305079243
Author:
Steven S. Zumdahl, Susan A. Zumdahl
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781133611097
Author:
Steven S. Zumdahl
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry: The Molecular Science
Chemistry: The Molecular Science
Chemistry
ISBN:
9781285199047
Author:
John W. Moore, Conrad L. Stanitski
Publisher:
Cengage Learning
Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
Chemistry
ISBN:
9781337399074
Author:
John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:
Cengage Learning