Question 1

Draw Fischer projection formulas for all stereoisomers of 2,4-dibromohexane,giving stereochemical details for each structure.

Accepted Answer

The answer of Draw Fischer projection formulas for all stereoisomers...

Question 2

(2R,4S)-2,4-Dichloropentane and (2S,4R)-2,4-dichloropentane are:

Accepted Answer

A)  enantiomers. 
B)  diastereomers. 
C)  identical. 
D)  conformational isomers. 
E)  constitutional isomers. 
A)  enantiomers. 
B)  diastereomers. 
C)  identical. 
D)  conformational isomers. 
E)  constitutional isomers.

Question 3

The two compounds shown below are:

Accepted Answer

A)  enantiomers. 
B)  diastereomers. 
C)  constitutional isomers. 
D)  identical. 
E)  different but not isomeric. 
A)  enantiomers. 
B)  diastereomers. 
C)  constitutional isomers. 
D)  identical. 
E)  different but not isomeric.

Question 4

Which of the following is true of any (S)-enantiomer?

Accepted Answer

A)  It rotates plane-polarized light to the right. 
B)  It rotates plane-polarized light to the left. 
C)  It is a racemic form. 
D)  It is the mirror image of the corresponding (R)-enantiomer. 
E)  It has the highest priority group on the left. 
A)  It rotates plane-polarized light to the right. 
B)  It rotates plane-polarized light to the left. 
C)  It is a racemic form. 
D)  It is the mirror image of the corresponding (R)-enantiomer. 
E)  It has the highest priority group on the left.

Question 5

The molecules below are:

Accepted Answer

A)  structural isomers. 
B)  enantiomers. 
C)  diastereomers. 
D)  identical. 
E)  None of these 
A)  structural isomers. 
B)  enantiomers. 
C)  diastereomers. 
D)  identical. 
E)  None of these

Question 6

-Which compound above (I-IV)is a meso compound?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  None of these 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  None of these

Question 7

The molecules shown are:

Accepted Answer

A)  constitutional isomers. 
B)  enantiomers. 
C)  diastereomers. 
D)  identical. 
E)  None of these 
A)  constitutional isomers. 
B)  enantiomers. 
C)  diastereomers. 
D)  identical. 
E)  None of these

Question 8

I and II are:

Accepted Answer

A)  constitutional isomers. 
B)  enantiomers. 
C)  identical. 
D)  diastereomers. 
E)  not isomeric. 
A)  constitutional isomers. 
B)  enantiomers. 
C)  identical. 
D)  diastereomers. 
E)  not isomeric.

Question 9

Which of the following is(are)meso?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  Two of the above 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  Two of the above

Question 10

Draw a Fischer projection formula of (3R)-6-Bromo-1-hexen-3-ol.

Accepted Answer

The answer of Draw a Fischer projection formula of (3R)-6-Bromo-1-hexen-3-ol....

Question 11

The molecule of aspartame ( Nutrasweet® ),depicted below,has ___________ ( how many? )stereogenic centers.

Accepted Answer

The answer of The molecule of aspartame ( Nutrasweet® ),depicted...

Question 12

-Which compounds above (I-IV)form a set of stereoisomers?

Accepted Answer

A)  I,II and III 
B)  II,III and IV 
C)  II and III 
D)  I,III and IV 
E)  I,II,III and IV 
A)  I,II and III 
B)  II,III and IV 
C)  II and III 
D)  I,III and IV 
E)  I,II,III and IV

Question 13

Which pair of structures represents the same compound?

Accepted Answer

A)  I and II 
B)  II and III 
C)  III and IV 
D)  III and V 
E)  IV and V 
A)  I and II 
B)  II and III 
C)  III and IV 
D)  III and V 
E)  IV and V

Question 14

Which of these is a comparatively insignificant factor affecting the magnitude of specific optical rotation?

Accepted Answer

A)  Concentration of the substance of interest 
B)  Purity of the sample 
C)  Temperature of the measurement 
D)  Length of the sample tube 
E)  All of the above are equally significant. 
A)  Concentration of the substance of interest 
B)  Purity of the sample 
C)  Temperature of the measurement 
D)  Length of the sample tube 
E)  All of the above are equally significant.

Question 15

How many chiral stereoisomers can be drawn for CH3CHFCHFCH(CH3)2?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  8 
A)  1 
B)  2 
C)  3 
D)  4 
E)  8

Question 16

I and II are:

Accepted Answer

A)  constitutional isomers. 
B)  enantiomers. 
C)  identical. 
D)  diastereomers. 
E)  not isomeric. 
A)  constitutional isomers. 
B)  enantiomers. 
C)  identical. 
D)  diastereomers. 
E)  not isomeric.

Question 17

The molecules below are:

Accepted Answer

A)  constitutional isomers. 
B)  enantiomers. 
C)  diastereomers. 
D)  identical. 
E)  None of these 
A)  constitutional isomers. 
B)  enantiomers. 
C)  diastereomers. 
D)  identical. 
E)  None of these

Question 18

I and II are:

Accepted Answer

A)  constitutional isomers. 
B)  enantiomers. 
C)  identical. 
D)  diastereomers. 
E)  not isomeric. 
A)  constitutional isomers. 
B)  enantiomers. 
C)  identical. 
D)  diastereomers. 
E)  not isomeric.

Question 19

The compounds whose structures are shown below would have:

Accepted Answer

A)  the same melting point. 
B)  different melting points. 
C)  equal but opposite optical rotations. 
D)  More than one of these 
E)  None of these 
A)  the same melting point. 
B)  different melting points. 
C)  equal but opposite optical rotations. 
D)  More than one of these 
E)  None of these

Question 20

Enantiomers are stereoisomers whose molecules are ____________________.

Accepted Answer

nonsuperpo

Exam 5: Stereochemistry: Chiral Molecules

Draw Fischer projection formulas for all stereoisomers of 2,4-dibromohexane,giving stereochemical details for each structure.

(2R,4S)-2,4-Dichloropentane and (2S,4R)-2,4-dichloropentane are:

The two compounds shown below are:

Which of the following is true of any (S)-enantiomer?

The molecules below are:

-Which compound above (I-IV)is a meso compound?

The molecules shown are:

I and II are:

Which of the following is(are)meso?

Draw a Fischer projection formula of (3R)-6-Bromo-1-hexen-3-ol.

The molecule of aspartame ( Nutrasweet® ),depicted below,has ___________ ( how many? )stereogenic centers.

-Which compounds above (I-IV)form a set of stereoisomers?

Which pair of structures represents the same compound?

Which of these is a comparatively insignificant factor affecting the magnitude of specific optical rotation?

How many chiral stereoisomers can be drawn for CH3CHFCHFCH(CH3)2?

I and II are:

The molecules below are:

I and II are:

The compounds whose structures are shown below would have:

Enantiomers are stereoisomers whose molecules are ____________________.

Carbon Compounds and Chemical Bonds

Representative Carbon Compounds: Functional Groups, Intermolecular Forces, and Infrared Ir Spectroscopy

An Introduction to Organic Reactions: Acids and Bases

Alkanes: Nomenclature, Conformational Analysis, and an Introduction to Synthesis

Ionic Reactions - Nucleophilic Substitution and Elimination Reactions of Alkyl Halides

Alkenes and Alkynes I: Properties and Synthesis, Elimination Reactions of Alkyl Halides

Alkenes and Alkynes Ii: Addition Reactions

Nuclear Magnetic Resonance and Mass Spectrometry: Tools for Structure Determination

Radical Reactions

Alcohols and Ethers

Alcohols From Carbonyl Compounds Oxidation-Reduction and Organometallic Compounds

Conjugated Unsaturated Systems

Aromatic Compounds

Reactions of Aromatic Compounds

Aldehydes and Ketones I Nucleophilic Addition to the Carbonyl Group

Aldehydes and Ketones Ii Aldol Reactions

Carboxylic Acids and Their Derivatives Nucleophilic Addition - Elimination at the Acyl Carbon

Synthesis and Reactions of Beta-Dicarbonyl Compounds: More Chemistry of Enolate Ions

Amines

Phenols and Aryl Halides: Nucleophilic Aromatic Substitution

Carbohydrates

Lipids

Amino Acids and Proteins

Nucleic Acids and Protein Synthesis

Filters

How many chiral stereoisomers can be drawn for CH₃CHFCHFCH(CH₃)₂?