Question 1

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 C

Question 2

Which molecule has a plane of symmetry?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  More than one of these 
E)  None of these 
A)  I 
B)  II 
C)  III 
D)  More than one of these 
E)  None of these D

Question 3

Draw a dash-wedge structure for (1S,3R)-1-ethyl-1,3-dimethylcyclopentane

Accepted Answer

The answer of Draw a dash-wedge structure for (1S,3R)-1-ethyl-1,3-dimethylcyclopentane...

Question 4

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 5

Which molecule is a meso compound?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  More than one of the above 
E)  None of the above 
A)  I 
B)  II 
C)  III 
D)  More than one of the above 
E)  None of the above

Question 6

Draw a dash-wedge structure for (2S,3R)-3-bromo-6,6-dimethyl-7-en-2-ol

Accepted Answer

The answer of Draw a dash-wedge structure for (2S,3R)-3-bromo-6,6-dimethyl-7-en-2-ol...

Question 7

Which structure(s)represent(s)diastereomer(s)of I?

Accepted Answer

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

Question 8

A meso compound has __________ chiral center(s),and is __________ upon its mirror image.

Accepted Answer

two or mor

Question 9

-Which compound above (I-IV)is (2R,3R)-2,3-butanediol?

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 10

Draw a dash-wedge structure for (1R,2S,3S)-3-bromo-2-vinylcyclohexanol

Accepted Answer

The answer of Draw a dash-wedge structure for (1R,2S,3S)-3-bromo-2-vinylcyclohexanol...

Question 11

For the generalized structure BrCH2CHClCH2CHClCH2Br there exists what number of stereoisomers?

Accepted Answer

A)  2 
B)  3 
C)  4 
D)  6 
E)  8 
A)  2 
B)  3 
C)  4 
D)  6 
E)  8

Question 12

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 13

Draw a dash-wedge structure for (1S,2S,5R)-5-methyl-2-propylcyclohexanol

Accepted Answer

The answer of Draw a dash-wedge structure for (1S,2S,5R)-5-methyl-2-propylcyclohexanol...

Question 14

Of the compounds which correspond to the general name "dichlorocyclobutane",how many are optically active?

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3 
E)  4 
A)  0 
B)  1 
C)  2 
D)  3 
E)  4

Question 15

A chiral molecule is defined as one that is _____________________ on its mirror image.

Accepted Answer

The answer of A chiral molecule is defined as one...

Question 16

Which structure represents (S)-2-bromobutane?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  More than one of the above 
E)  None of the above 
A)  I 
B)  II 
C)  III 
D)  More than one of the above 
E)  None of the above

Question 17

The compounds whose molecules 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 18

Draw a dash-wedge structure for (3R,6R)-3-bromo-6-methylcyclohex-1-ene

Accepted Answer

The answer of Draw a dash-wedge structure for (3R,6R)-3-bromo-6-methylcyclohex-1-ene...

Question 19

Chiral molecules are represented by:

Accepted Answer

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

Question 20

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

Exam 5: Stereochemistry: Chiral Molecules

The molecules below are:

Which molecule has a plane of symmetry?

Draw a dash-wedge structure for (1S,3R)-1-ethyl-1,3-dimethylcyclopentane

The molecules shown are:

Which molecule is a meso compound?

Draw a dash-wedge structure for (2S,3R)-3-bromo-6,6-dimethyl-7-en-2-ol

Which structure(s)represent(s)diastereomer(s)of I?

A meso compound has __________ chiral center(s),and is __________ upon its mirror image.

-Which compound above (I-IV)is (2R,3R)-2,3-butanediol?

Draw a dash-wedge structure for (1R,2S,3S)-3-bromo-2-vinylcyclohexanol

For the generalized structure BrCH2CHClCH2CHClCH2Br there exists what number of stereoisomers?

The molecules below are:

Draw a dash-wedge structure for (1S,2S,5R)-5-methyl-2-propylcyclohexanol

Of the compounds which correspond to the general name "dichlorocyclobutane",how many are optically active?

A chiral molecule is defined as one that is _____________________ on its mirror image.

Which structure represents (S)-2-bromobutane?

The compounds whose molecules are shown below would have:

Draw a dash-wedge structure for (3R,6R)-3-bromo-6-methylcyclohex-1-ene

Chiral molecules are represented by:

The molecules below 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

A meso compound has chiral center(s),and is upon its mirror image.

For the generalized structure BrCH₂CHClCH₂CHClCH₂Br there exists what number of stereoisomers?