Question 1

When using the Cahn-Ingold-Prelog rules for prioritizing groups on a stereogenic carbon,priority is first assigned on the basis of ___.

Accepted Answer

The answer of When using the Cahn-Ingold-Prelog rules for prioritizing...

Question 2

In which of the following reactions is the absolute configuration of the product likely to be the same as that of the reactant?

Accepted Answer

A)    
B)    
C)    
D) All of these choices. 
E) Two of these choices. 
A)    
B)    
C)    
D) All of these choices. 
E) Two of these choices.

Question 3

Which statement is true of 1,3-dimethylcyclobutane?

Accepted Answer

A) Only one form of the compound is possible. 
B) Two diastereomeric forms are possible. 
C) Two sets of enantiomers are possible. 
D) Two enantiomeric forms and one meso compound are possible. 
E) None of the previous statements is true. 
A) Only one form of the compound is possible. 
B) Two diastereomeric forms are possible. 
C) Two sets of enantiomers are possible. 
D) Two enantiomeric forms and one meso compound are possible. 
E) None of the previous statements is true.

Question 4

(R)-2-Chlorobutane is represented by:

Accepted Answer

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

Question 5

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 6

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 7

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 8

Which of the following is (are)meso compound(s)?

Accepted Answer

A) I 
B) II 
C) III 
D) Both II and III 
E) Both I and III 
A) I 
B) II 
C) III 
D) Both II and III 
E) Both I and III

Question 9

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

Accepted Answer

two or mor

Question 10

Cis-trans isomers are:

Accepted Answer

A) diastereomers. 
B) enantiomers. 
C) stereoisomers. 
D) constitutional isomers. 
E) More than one of these choices. 
A) diastereomers. 
B) enantiomers. 
C) stereoisomers. 
D) constitutional isomers. 
E) More than one of these choices.

Question 11

Enantiomers are:

Accepted Answer

A) molecules that have a mirror image. 
B) molecules that have at least one stereogenic center. 
C) non-superposable molecules. 
D) non-superposable constitutional isomers. 
E) non-superposable molecules that are mirror images of each other. 
A) molecules that have a mirror image. 
B) molecules that have at least one stereogenic center. 
C) non-superposable molecules. 
D) non-superposable constitutional isomers. 
E) non-superposable molecules that are mirror images of each other.

Question 12

Which compounds (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

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 14

The molecules below are:

Accepted Answer

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

Question 15

Draw a dash-wedge structure for (S,trans)-5-fluoro-2,2-dimethylhex-3-ene

Accepted Answer

The answer of Draw a dash-wedge structure for (S,trans)-5-fluoro-2,2-dimethylhex-3-ene...

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 shown are:

Accepted Answer

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

Question 18

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 19

All molecules with a plane of symmetry are ___.

Accepted Answer

The answer of All molecules with a plane of symmetry...

Exam 5: Stereochemistry

When using the Cahn-Ingold-Prelog rules for prioritizing groups on a stereogenic carbon,priority is first assigned on the basis of ___.

In which of the following reactions is the absolute configuration of the product likely to be the same as that of the reactant?

Which statement is true of 1,3-dimethylcyclobutane?

(R)-2-Chlorobutane is represented by:

I and II are:

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

Chiral molecules are represented by:

Which of the following is (are)meso compound(s)?

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

Cis-trans isomers are:

Enantiomers are:

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

I and II are:

The molecules below are:

Draw a dash-wedge structure for (S,trans)-5-fluoro-2,2-dimethylhex-3-ene

I and II are:

The molecules shown are:

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

All molecules with a plane of symmetry are ___.

The Basics

Families of Carbon

Acids and Bases

Nomenclature and Conformations of Alkanes and Cycloalkanes

Nucleophilic Reactions

Alkenes and Alkynes I

Alkenes and Alkynes II

Nuclear Magnetic Resonance and Mass Spectrometry

Radical Reactions

Alcohols and Ethers

Alcohols From Carbonyl Compounds

Conjugated Unsaturated Systems

Aromatic Compounds

Reactions of Aromatic Compounds

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Reactions at the Α Carbon of Carbonyl Compounds

Condensation and Conjugate Addition Reactions of Carbonyl Compounds

Amines

Transition Metal Complexes

Carbohydrates

Lipids

Amino Acids and Proteins

Nucleic Acids and Protein Synthesis

Filters

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

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