Question 1

Which of the following have the S configuration?

Accepted Answer

A)  only 1 
B)  only 2 
C)  only 1 and 2 
D)  1, 2 and 3 
A)  only 1 
B)  only 2 
C)  only 1 and 2 
D)  1, 2 and 3

Question 2

What is the relationship between the following pair of structures?

Accepted Answer

A)  They are enantiomers 
B)  They are diastereomers 
C)  The are constitutional isomers 
D)  They are identical 
A)  They are enantiomers 
B)  They are diastereomers 
C)  The are constitutional isomers 
D)  They are identical

Question 3

Instructions:
Refer to the structure below to answer the following questions.   Refer to instructions. Give the complete name of the enantiomer of (S)-(-)-serine.

Accepted Answer

The answer of Instructions:
Refer to the structure below to answer...

Question 4

How many stereoisomers of 3-chloro-2-methylbutane exist?

Accepted Answer

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

Question 5

The numbers on the carbon center of the following molecule represent atomic numbers.   The molecule is in

Accepted Answer

A)  the R configuration. 
B)  the S configuration. 
C)  The carbon is not a chiral center in this molecule. 
D)  The exact configuration cannot be determined without knowing additional atomic numbers. 
A)  the R configuration. 
B)  the S configuration. 
C)  The carbon is not a chiral center in this molecule. 
D)  The exact configuration cannot be determined without knowing additional atomic numbers.

Question 6

2.10 g of an unknown compound was dissolved in 15.00 mL of ethanol. The sample was placed in a 10.0 cm cell in a polarimeter and the angle of rotation was determined to be -18.48$\degree$. What is the specific rotation of this unknown and specify if the compound is levorotatory or dextrorotatory?

Accepted Answer

-132 and l

Question 7

Which of the following structures contain a plane of symmetry?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  All three contain a plane of symmetry 
A)  1 
B)  2 
C)  3 
D)  All three contain a plane of symmetry

Question 8

The biological importance of enantiomers arises from?

Accepted Answer

A)  Biological reactions involve receptor molecules. 
B)  Biological receptors are chiral. 
C)  Biological receptors require a specific enantiomer for reaction. 
D)  Each enantiomer has different biological properties. 
E)  all of these 
A)  Biological reactions involve receptor molecules. 
B)  Biological receptors are chiral. 
C)  Biological receptors require a specific enantiomer for reaction. 
D)  Each enantiomer has different biological properties. 
E)  all of these

Question 9

Which of the following structures represent the same stereoisomer?

Accepted Answer

A)  only 1 and 2 
B)  only 1 and 3 
C)  only 2 and 3 
D)  1, 2 and 3 
A)  only 1 and 2 
B)  only 1 and 3 
C)  only 2 and 3 
D)  1, 2 and 3

Question 10

Instructions: Consider the structure of streptimidone below to answer the following question(s).
   Refer to instructions. Assign R or S configuration to each chirality center indicated in streptimidone.

Accepted Answer

The answer of Instructions: Consider the structure of streptimidone below...

Question 11

Instructions: In the molecules below, assign R, S configurations to the chirality center indicated with an arrow.
   Refer to instructions. The configuration of the carbon atom labeled 20 is _____.

Accepted Answer

The answer of Instructions: In the molecules below, assign R,...

Question 12

Which of the following compounds is (are) achiral?

Accepted Answer

A)  only 1 
B)  only 1 and 2 
C)  only 2 and 3 
D)  1, 2 and 3 
A)  only 1 
B)  only 1 and 2 
C)  only 2 and 3 
D)  1, 2 and 3

Question 13

Which of the following have the R configuration?

Accepted Answer

A)  only 1 
B)  only 2 
C)  only 1 and 2 
D)  1, 2 and 3 
A)  only 1 
B)  only 2 
C)  only 1 and 2 
D)  1, 2 and 3

Question 14

Which of the following is the definition of a pair of diastereomers?

Accepted Answer

A)  A pair of structures that are superimposable mirror images of one another 
B)  A pair of stereoisomers that are non-superimposable mirror images of one another 
C)  A pair of stereoisomers that are not mirror images of one another 
D)  A pair of stereoisomers that have equal specific rotations 
A)  A pair of structures that are superimposable mirror images of one another 
B)  A pair of stereoisomers that are non-superimposable mirror images of one another 
C)  A pair of stereoisomers that are not mirror images of one another 
D)  A pair of stereoisomers that have equal specific rotations

Question 15

What is the relationship between the following pair of structures?

Accepted Answer

A)  They are enantiomers 
B)  They are diastereomers 
C)  The are constitutional isomers 
D)  They are identical 
A)  They are enantiomers 
B)  They are diastereomers 
C)  The are constitutional isomers 
D)  They are identical

Which of the following have the S configuration?

What is the relationship between the following pair of structures?

Instructions: Refer to the structure below to answer the following questions. Refer to instructions. Give the complete name of the enantiomer of (S)-(-)-serine.

How many stereoisomers of 3-chloro-2-methylbutane exist?

The numbers on the carbon center of the following molecule represent atomic numbers. The molecule is in

2.10 g of an unknown compound was dissolved in 15.00 mL of ethanol. The sample was placed in a 10.0 cm cell in a polarimeter and the angle of rotation was determined to be -18.48 $\degree$ . What is the specific rotation of this unknown and specify if the compound is levorotatory or dextrorotatory?

Which of the following structures contain a plane of symmetry?

The biological importance of enantiomers arises from?

Which of the following structures represent the same stereoisomer?

Instructions: Consider the structure of streptimidone below to answer the following question(s). Refer to instructions. Assign R or S configuration to each chirality center indicated in streptimidone.

Instructions: In the molecules below, assign R, S configurations to the chirality center indicated with an arrow. Refer to instructions. The configuration of the carbon atom labeled 20 is _____.

Which of the following compounds is (are) achiral?

Which of the following have the R configuration?

Which of the following is the definition of a pair of diastereomers?

What is the relationship between the following pair of structures?

Structure and Bonding:acids and Bases

Alkanes: The Nature of Organic Compounds

Alkenes and Alkynes: the Nature of Organic Reactions

Reactions of Alkenes and Alkynes

Aromatic Compounds

Organohalides: Nucleophilic Substitutions and Eliminations

Alcohols, Phenols, Ethers, and Their Sulfur Analogs

Aldehydes and Ketones: Nucleophilic Addition Reactions

Carboxylic Acids and Derivatives: Nucleophilic Acyl Substitution Reactions

Carbonyl Alpha-Substitution Reactions and Condensation Reactions

Amines

Structure Determination

Biomolecules: Carbohydrates

Biomolecules: Amino Acids, Peptides, and Proteins

Biomolecules: Lipids and Nucleic Acids

The Organic Chemistry of Metabolic Pathways

Filters

Exam 6: Sterechemistry at Tetrahedral Centers

Which of the following have the S configuration?

What is the relationship between the following pair of structures?

Instructions: Refer to the structure below to answer the following questions. Refer to instructions. Give the complete name of the enantiomer of (S)-(-)-serine.

How many stereoisomers of 3-chloro-2-methylbutane exist?

The numbers on the carbon center of the following molecule represent atomic numbers. The molecule is in

Which of the following structures contain a plane of symmetry?

The biological importance of enantiomers arises from?

Which of the following structures represent the same stereoisomer?

Instructions: Consider the structure of streptimidone below to answer the following question(s). Refer to instructions. Assign R or S configuration to each chirality center indicated in streptimidone.

Instructions: In the molecules below, assign R, S configurations to the chirality center indicated with an arrow. Refer to instructions. The configuration of the carbon atom labeled 20 is _____.

Which of the following compounds is (are) achiral?

Which of the following have the R configuration?

Which of the following is the definition of a pair of diastereomers?

What is the relationship between the following pair of structures?

Structure and Bonding:acids and Bases

Alkanes: The Nature of Organic Compounds

Alkenes and Alkynes: the Nature of Organic Reactions

Reactions of Alkenes and Alkynes

Aromatic Compounds

Organohalides: Nucleophilic Substitutions and Eliminations

Alcohols, Phenols, Ethers, and Their Sulfur Analogs

Aldehydes and Ketones: Nucleophilic Addition Reactions

Carboxylic Acids and Derivatives: Nucleophilic Acyl Substitution Reactions

Carbonyl Alpha-Substitution Reactions and Condensation Reactions

Amines

Structure Determination

Biomolecules: Carbohydrates

Biomolecules: Amino Acids, Peptides, and Proteins

Biomolecules: Lipids and Nucleic Acids

The Organic Chemistry of Metabolic Pathways

Filters