enantiomers

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...
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5. CIRCLE ALL THAT APPLY: Why is it so difficult to physically separate enantiomers from each
other in a mixture?
a. They are the same compound
b. They have the same melting points
c. They have the same densities
d. They are both meso compounds
6. TRUE OR FALSE: When a medication is taken that is composed of D and L isomers (racemate
mixture):
a. The D and Lisomers typically generate different biological responses:
b.
If one of the isomers is isolated, the pure drug would have a faster
biological response time:
7. Are carbohydrates soluble or insoluble in water?
8. Are lipids soluble or insoluble in water?
9. Classify each of the following as a either saturated, monounsaturated or polyunsaturated fatty
acids.
a.
b. CH3-(CH₂)2-(CH=CH)2-(CH₂)-COOH
C. CH3-CH=CH-(CH2)13-COOH
CH3-(CH₂)24-COOH
10. For the following compound:
CH3-(CH₂)14-C-0-(CH₂)29-CH3
a. Is this an example of a wax, fat or oil:
b. What functional group is present:
11. In each of the following pairs, circle which molecule has a lower melting point.
a.
b.
COOH
OR
COOH OR
COOH
COOH
Transcribed Image Text:5. CIRCLE ALL THAT APPLY: Why is it so difficult to physically separate enantiomers from each other in a mixture? a. They are the same compound b. They have the same melting points c. They have the same densities d. They are both meso compounds 6. TRUE OR FALSE: When a medication is taken that is composed of D and L isomers (racemate mixture): a. The D and Lisomers typically generate different biological responses: b. If one of the isomers is isolated, the pure drug would have a faster biological response time: 7. Are carbohydrates soluble or insoluble in water? 8. Are lipids soluble or insoluble in water? 9. Classify each of the following as a either saturated, monounsaturated or polyunsaturated fatty acids. a. b. CH3-(CH₂)2-(CH=CH)2-(CH₂)-COOH C. CH3-CH=CH-(CH2)13-COOH CH3-(CH₂)24-COOH 10. For the following compound: CH3-(CH₂)14-C-0-(CH₂)29-CH3 a. Is this an example of a wax, fat or oil: b. What functional group is present: 11. In each of the following pairs, circle which molecule has a lower melting point. a. b. COOH OR COOH OR COOH COOH
1. Label the following as a: diasteriomer, enantiomer or neither (different compound)
CHO
CHO
a.
b.
HO
HO
Ho
H
-H
CH₂OH
CHO
H-
HO-
CHO
-OH
TH
CH₂CH₂CH₂
CH₂OH
H
and
CH₂OH
and
H-
H-
H
b.
2. Indicate whether each of the following molecules are chiral or achiral. Circle the chiral carbon(s)
if present in each structure.
CH3
HC–CH, CH
-OH
-OH
CH₂OH
HO
HO-
CHO
-H
-H
CH₂OH
3. Indicate if the following molecule has an R or S configuration.
a.
OH
b.
4. Answer questions for the following molecule:
a. Circle any/all chiral centers.
b. Is the molecule chiral or achiral.
Atomic #'s & Masses:
Carbon: 6, 12.01g/mole Oxygen: 8, 16.00g/mole H: 1, 1.01g/mole
H
H.
CH₂
Br
Br
Transcribed Image Text:1. Label the following as a: diasteriomer, enantiomer or neither (different compound) CHO CHO a. b. HO HO Ho H -H CH₂OH CHO H- HO- CHO -OH TH CH₂CH₂CH₂ CH₂OH H and CH₂OH and H- H- H b. 2. Indicate whether each of the following molecules are chiral or achiral. Circle the chiral carbon(s) if present in each structure. CH3 HC–CH, CH -OH -OH CH₂OH HO HO- CHO -H -H CH₂OH 3. Indicate if the following molecule has an R or S configuration. a. OH b. 4. Answer questions for the following molecule: a. Circle any/all chiral centers. b. Is the molecule chiral or achiral. Atomic #'s & Masses: Carbon: 6, 12.01g/mole Oxygen: 8, 16.00g/mole H: 1, 1.01g/mole H H. CH₂ Br Br
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