Question 1

Draw dash-wedge structures for all stereoisomers of 1-bromo-3-isopropylcyclohexane,giving stereochemical details for each structure.

Accepted Answer

The answer of Draw dash-wedge structures for all stereoisomers of...

Question 2

How many different compounds are there which correspond to the general name "3-(1-methylbutyl)cyclobutanol"?

Accepted Answer

A)  2 
B)  4 
C)  6 
D)  8 
E)  None of the above 
A)  2 
B)  4 
C)  6 
D)  8 
E)  None of the above

Question 3

Which compound would show optical activity?

Accepted Answer

A)  cis-1,4- Dimethylcyclohexane 
B)  trans-1,4- Dimethylcyclohexane 
C)  cis-1,4- Dimethylcycloheptane 
D)  trans-1,4- Dimethylcycloheptane 
E)  More than one of these 
A)  cis-1,4- Dimethylcyclohexane 
B)  trans-1,4- Dimethylcyclohexane 
C)  cis-1,4- Dimethylcycloheptane 
D)  trans-1,4- Dimethylcycloheptane 
E)  More than one of these

Question 4

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 5

The molecules below are:

Accepted Answer

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

Question 6

Which of the following is the enantiomer of the following substance?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  It does not have a non-superposable enantiomer. 
E)  Both II and III 
A)  I 
B)  II 
C)  III 
D)  It does not have a non-superposable enantiomer. 
E)  Both II and III

Question 7

Which is a meso compound?

Accepted Answer

A)  (2R,3R)-2,3-Dibromobutane 
B)  (2R,3S)-2,3-Dibromopentane 
C)  (2R,4R)-2,4-Dibromopentane 
D)  (2R,4S)-2,4-Dibromopentane 
E)  (2R,4S)-2,4-Dibromohexane 
A)  (2R,3R)-2,3-Dibromobutane 
B)  (2R,3S)-2,3-Dibromopentane 
C)  (2R,4R)-2,4-Dibromopentane 
D)  (2R,4S)-2,4-Dibromopentane 
E)  (2R,4S)-2,4-Dibromohexane

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

The device that is used for measuring the effect of optically active compounds on plane-polarized light is called a ________________.

Accepted Answer

The answer of The device that is used for measuring...

Question 10

To be superposable,when one object is placed on top of another,_________________.

Accepted Answer

all parts

Question 11

The molecules below are:

Accepted Answer

A)  enantiomers. 
B)  diastereomers. 
C)  constitutional isomers. 
D)  two different conformations of the same molecule. 
E)  not isomeric. 
A)  enantiomers. 
B)  diastereomers. 
C)  constitutional isomers. 
D)  two different conformations of the same molecule. 
E)  not isomeric.

Question 12

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 13

An alkane which can exhibit optical activity is:

Accepted Answer

A)  Neopentane 
B)  Isopentane 
C)  3-Methylpentane 
D)  3-Methylhexane 
E)  2,3-Dimethylbutane 
A)  Neopentane 
B)  Isopentane 
C)  3-Methylpentane 
D)  3-Methylhexane 
E)  2,3-Dimethylbutane

Question 14

Draw a dash-wedge structure for (3R)-3-methyl-5-hexen-3-ol

Accepted Answer

The answer of Draw a dash-wedge structure for (3R)-3-methyl-5-hexen-3-ol...

Question 15

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 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

Draw a dash-wedge structure for (2R,3R)-3-phenylbutan-2-ol

Accepted Answer

The answer of Draw a dash-wedge structure for (2R,3R)-3-phenylbutan-2-ol...

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

Draw a dash-wedge structure for (3S,5R)-5-chloro-3-isopropylcyclohex-1-ene

Accepted Answer

The answer of Draw a dash-wedge structure for (3S,5R)-5-chloro-3-isopropylcyclohex-1-ene...

Question 20

If a solution of a compound (30.0 g/100 mL of solution)has a measured rotation of +15º in a 2 dm tube,the specific rotation is:

Accepted Answer

A)  +50 
B)  +25 
C)  +15 
D)  +7.5 
E)  +4.0 
A)  +50 
B)  +25 
C)  +15 
D)  +7.5 
E)  +4.0

Exam 5: Stereochemistry: Chiral Molecules

Draw dash-wedge structures for all stereoisomers of 1-bromo-3-isopropylcyclohexane,giving stereochemical details for each structure.

How many different compounds are there which correspond to the general name "3-(1-methylbutyl)cyclobutanol"?

Which compound would show optical activity?

I and II are:

The molecules below are:

Which of the following is the enantiomer of the following substance?

Which is a meso compound?

I and II are:

The device that is used for measuring the effect of optically active compounds on plane-polarized light is called a ________________.

To be superposable,when one object is placed on top of another,_________________.

The molecules below are:

I and II are:

An alkane which can exhibit optical activity is:

Draw a dash-wedge structure for (3R)-3-methyl-5-hexen-3-ol

I and II are:

I and II are:

Draw a dash-wedge structure for (2R,3R)-3-phenylbutan-2-ol

I and II are:

Draw a dash-wedge structure for (3S,5R)-5-chloro-3-isopropylcyclohex-1-ene

If a solution of a compound (30.0 g/100 mL of solution)has a measured rotation of +15º in a 2 dm tube,the specific rotation is:

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

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