Question 1

Can the two compounds be separated by distillation? Why or why not?
(1S,2S,3R,5S)-Pinanediol and (1S,2R,3R,5R)-Pinanediol

Accepted Answer

Yes. These compounds...

Question 2

Provide a Fischer projection of (2R,3R,4S)-2,3,4-trichloroheptane.

Accepted Answer

The answer of Provide a Fischer projection of (2R,3R,4S)-2,3,4-trichloroheptane....

Question 3

Draw the structure of (S)-3-chloro-3-methylhexane. Take particular care to indicate stereochemistry properly.

Accepted Answer

The answer of Draw the structure of (S)-3-chloro-3-methylhexane. Take particular...

Question 4

What term describes the structural relationship between (2R,3R,4S) -2,3,4-trichloroheptane and (2R,3R,4R) -2,3,4-trichloroheptane?

Accepted Answer

A)   not isomers
B)   constitutional isomers
C)   enantiomers
D)   diastereomers
E)   conformers

Question 5

Which of the following terms best describes the pair of compounds shown: enantiomers, diastereomers, or the same compound?

Accepted Answer

The answer of Which of the following terms best describes...

Question 6

Is the molecule shown below chiral or achiral?

Accepted Answer

chiral

Question 7

Label each asymmetric carbon in the compound below as R or S.

Accepted Answer

The answer of Label each asymmetric carbon in the compound...

Question 8

If possible, draw the structure of the enantiomer of the molecule shown below.

Accepted Answer

The compound is an a...

Question 9

Can one separate a mixture of enantiomers by gas chromatography? Explain.

Accepted Answer

Provided the compounds can be volatilize...

Question 10

How many asymmetric carbons are present in the compound below?

Accepted Answer

The answer of How many asymmetric carbons are present in...

Question 11

Assign the proper configurational label, R or S, to the chiral carbon in the molecule shown below.

Accepted Answer

The answer of Assign the proper configurational label, R or...

Question 12

The stereochemical configuration of D-Threonine is (2R, 3S) . Which of the following structures corresponds to the correct configuration?

Accepted Answer

A)   I
B)   II
C)   III
D)   IV

Question 13

Which of the following terms best describes the pair of compounds shown: enantiomers, diastereomers, or the same compound?

Accepted Answer

the same compound

Question 14

Which of the statements below correctly describes an achiral molecule?

Accepted Answer

A)   The molecule has a nonsuperimposable mirror image.
B)   The molecule exhibits optical activity when it interacts with plane-polarized light.
C)   The molecule has an enantiomer.
D)   The molecule might be a meso form.
E)   None of the above

Question 15

________ are isomers which have the same bonding sequence but differ in the orientation of their atoms in space.

Accepted Answer

The answer of ________ are isomers which have the same...

Question 16

Is the mirror image of the following molecule an enantiomer or is it superimposable with it?

Accepted Answer

Superimpos...

Question 17

Which of the following statements is (are)  true for the compound cis-1,2-dichlorocyclopropane?

Accepted Answer

A)   This compound is chiral.
B)   The enantiomer of this compound is trans-1,2-dichlorocyclopropane.
C)   This compound contains no asymmetric carbons.
D)   all of the above
E)   none of the above

Question 18

Predict the specific rotation of the compound shown.

Accepted Answer

A)   It is impossible to predict; it must be determined experimentally.
B)   Because both asymmetric centers are R, the compound is dextrorotatory.
C)   Because both asymmetric centers are S, the compound is levorotatory.
D)   Zero; the compound is achiral.
E)   Because this compound represents a racemic mixture, the compound is dextrorotatory.

Question 19

Is it theoretically possible to separate the pair of compounds below by distillation? Explain briefly.

Accepted Answer

Yes. The molecules a...

Question 20

Which of the following statements is (are)  true for the compound (3R, 4R) -3,4-dimethylhexane?

Accepted Answer

A)   This compound is chiral.
B)   The enantiomer of this compound is (3S, 4S) -3,4-dimethylhexane.
C)   This compound is a diastereomer of (3R, 4S) -3,4-dimethylhexane.
D)   all of the above
E)   none of the above

Exam 5: Stereochemistry

Can the two compounds be separated by distillation? Why or why not? (1S,2S,3R,5S)-Pinanediol and (1S,2R,3R,5R)-Pinanediol

Correct AnswerverifiedYes. These compounds...View AnswerShow Answer

Provide a Fischer projection of (2R,3R,4S)-2,3,4-trichloroheptane.

Correct AnswerverifiedShow Answer

Draw the structure of (S)-3-chloro-3-methylhexane. Take particular care to indicate stereochemistry properly.

Correct AnswerverifiedShow Answer

What term describes the structural relationship between (2R,3R,4S) -2,3,4-trichloroheptane and (2R,3R,4R) -2,3,4-trichloroheptane?

Correct AnswerverifiedShow Answer

Which of the following terms best describes the pair of compounds shown: enantiomers, diastereomers, or the same compound?

Correct AnswerverifiedShow Answer

Is the molecule shown below chiral or achiral?

Correct Answerverifiedchiral

Label each asymmetric carbon in the compound below as R or S.

Correct Answerverified11eab5e1_c8bd_ea81_9bae_c5fd1e08f291_TB6199_00

If possible, draw the structure of the enantiomer of the molecule shown below.

Correct AnswerverifiedThe compound is an a...View AnswerShow Answer

Can one separate a mixture of enantiomers by gas chromatography? Explain.

Correct AnswerverifiedProvided the compounds can be volatilize...View AnswerShow Answer

How many asymmetric carbons are present in the compound below?

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Assign the proper configurational label, R or S, to the chiral carbon in the molecule shown below.

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The stereochemical configuration of D-Threonine is (2R, 3S) . Which of the following structures corresponds to the correct configuration?

Correct AnswerverifiedShow Answer

Which of the following terms best describes the pair of compounds shown: enantiomers, diastereomers, or the same compound?

Correct Answerverifiedthe same compound

Which of the statements below correctly describes an achiral molecule?

Correct AnswerverifiedShow Answer

________ are isomers which have the same bonding sequence but differ in the orientation of their atoms in space.

Correct AnswerverifiedShow Answer

Is the mirror image of the following molecule an enantiomer or is it superimposable with it?

Correct AnswerverifiedSuperimpos...View AnswerShow Answer

Which of the following statements is (are) true for the compound cis-1,2-dichlorocyclopropane?

Correct AnswerverifiedShow Answer

Predict the specific rotation of the compound shown.

Correct AnswerverifiedShow Answer

Is it theoretically possible to separate the pair of compounds below by distillation? Explain briefly.

Correct AnswerverifiedYes. The molecules a...View AnswerShow Answer

Which of the following statements is (are) true for the compound (3R, 4R) -3,4-dimethylhexane?

Correct AnswerverifiedShow Answer

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Yes. These compounds...
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chiral

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11eab5e1_c8bd_ea81_9bae_c5fd1e08f291_TB6199_00

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The compound is an a...
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Provided the compounds can be volatilize...
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the same compound

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Superimpos...
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Yes. The molecules a...
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