Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
Related questions
Question
just problem 5.20 please

Transcribed Image Text:present a pair of enantiomers. Formulas Cand D represent identical orientations of the
Br H
H
Br
ures A and B are nonsuperposable and represent a pair of enantiomers.
a we write the new structure C (see below) and its mirror image D, however, the
a is different. The two structures are superposable. This means that C and D do not
sume compound:
H H
H H
Br
Br
Br
Br
C
D
The molecule represented by structure C (or D) is not chiral even though it contains
Wo chirality centers.
• If a molecule has an internal plane of symmetry it is achiral.
A meso compound is an achiral molecule that contains chirality centers and has an
internal plane of symmetry. Meso compounds are not optically active.
Another test for molecular chirality is to construct a model (or write the structure) of
the molecule and then test whether or not the model (or structure) is superposable on its
mirror image. If it is, the molecule is achiral. If it is not, the molecule is chiral.
We have already carried out this test with structure C and found that it is achiral. We dibromobutane. This plane
can also demonstrate that C is achiral in another way. Figure 5.15 shows that structure C
has an internal plane of rymmetry (Section 5.6).
The following two problems relate to compounds A-D in the preceding paragraphs.
FIGURE 5.15 The plane
of symmetry of meso-2,3-
divides the molecule into halves
that are mirror images of each
other.
Which of the following would be optically active?
•PRACTICE PROBLEM 5.20
(a) A pure sample of A
b) A pure sample of B
(c) A pure sample of C
(d) An equimolar mixture of A and B
Expert Solution

This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 1 images

Knowledge Booster
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
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning

Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education

Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning

Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning

Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education

Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning

Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education

Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning

Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY