Question 1

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 2

Draw a dash-wedge structure for (R,cis)-hept-3-en-5-yn-2-ol

Accepted Answer

The answer of Draw a dash-wedge structure for (R,cis)-hept-3-en-5-yn-2-ol...

Question 3

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 these choices. 
A) 2 
B) 4 
C) 6 
D) 8 
E) None of these choices.

Question 4

Which molecule is achiral?

Accepted Answer

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

Question 5

What is the complete IUPAC name of the following substance? (Remember to give stereochemical details,as relevant.)

Accepted Answer

(1S,3S)-me

Question 6

A racemic mixture shows a specific rotation value of 0 because molecules in the mixture will not rotate plane-polarized light.

Accepted Answer

A) True 
 B)False

Question 7

Draw the Fischer projection of the following compound with the lowest priority groups on each chiral carbon in the back: (3R,4S)-4-bromo-4-chloro-3-heptanol.

Accepted Answer

The answer of Draw the Fischer projection of the following...

Question 8

When discussing the stereochemical relationship of cis/trans isomers of cyclic compounds,we refer to them as ___.

Accepted Answer

The answer of When discussing the stereochemical relationship of cis/trans...

Question 9

Which of the following compounds are chiral?

Accepted Answer

A) I,IV,and V 
B) II only 
C) II and III 
D) III only 
E) all compounds are achiral 
A) I,IV,and V 
B) II only 
C) II and III 
D) III only 
E) all compounds are achiral

Question 10

A molecule that contains stereogenic carbons but is nonetheless achiral is referred to as a ___.

Accepted Answer

The answer of A molecule that contains stereogenic carbons but...

Question 11

Which one of the following can exist in optically active forms?

Accepted Answer

A) cis-1,3-Dichlorocyclohexane 
B) trans-1,3-Dichlorocyclohexane 
C) cis-1,4-Dichlorocyclohexane 
D) trans-1,4-Dichlorocyclohexane 
E) cis-1,2-Dichlorocyclohexane 
A) cis-1,3-Dichlorocyclohexane 
B) trans-1,3-Dichlorocyclohexane 
C) cis-1,4-Dichlorocyclohexane 
D) trans-1,4-Dichlorocyclohexane 
E) cis-1,2-Dichlorocyclohexane

Question 12

Draw a dash-wedge structure for (1S,2R,3R)-1-tert-butyl-3-chloro-2-methylcyclohexane

Accepted Answer

The answer of Draw a dash-wedge structure for (1S,2R,3R)-1-tert-butyl-3-chloro-2-methylcyclohexane...

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

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 15

The structures   represent:

Accepted Answer

A) a single compound. 
B) enantiomers. 
C) meso forms. 
D) diastereomers. 
E) conformational isomers. 
A) a single compound. 
B) enantiomers. 
C) meso forms. 
D) diastereomers. 
E) conformational isomers.

Question 16

X and Y are enantiomers with chemical formula C6H10.A racemic mixture of X and Y treated with excess H2 and Pd/C was converted to a single compound Z (C6H12) which did not show optical activity.Suggest structure for X,Y and Z.

Accepted Answer

Question 17

What is the complete IUPAC name of the following substance? (Remember to give stereochemical details,as relevant.)

Accepted Answer

(3R,4R)-3,

Question 18

Draw a dash-wedge structure for (2R,4S)-2,4-dibromo-2-chloropentane

Accepted Answer

The answer of Draw a dash-wedge structure for (2R,4S)-2,4-dibromo-2-chloropentane...

Question 19

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 20

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

Exam 5: Stereochemistry

The molecules below are:

Draw a dash-wedge structure for (R,cis)-hept-3-en-5-yn-2-ol

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

Which molecule is achiral?

What is the complete IUPAC name of the following substance? (Remember to give stereochemical details,as relevant.)

A racemic mixture shows a specific rotation value of 0 because molecules in the mixture will not rotate plane-polarized light.

Draw the Fischer projection of the following compound with the lowest priority groups on each chiral carbon in the back: (3R,4S)-4-bromo-4-chloro-3-heptanol.

When discussing the stereochemical relationship of cis/trans isomers of cyclic compounds,we refer to them as ___.

Which of the following compounds are chiral?

A molecule that contains stereogenic carbons but is nonetheless achiral is referred to as a ___.

Which one of the following can exist in optically active forms?

Draw a dash-wedge structure for (1S,2R,3R)-1-tert-butyl-3-chloro-2-methylcyclohexane

I and II are:

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

The structures represent:

X and Y are enantiomers with chemical formula C6H10.A racemic mixture of X and Y treated with excess H2 and Pd/C was converted to a single compound Z (C6H12) which did not show optical activity.Suggest structure for X,Y and Z.

What is the complete IUPAC name of the following substance? (Remember to give stereochemical details,as relevant.)

Draw a dash-wedge structure for (2R,4S)-2,4-dibromo-2-chloropentane

Which pair of structures represents the same compound?

An alkane which can exhibit optical activity is:

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

X and Y are enantiomers with chemical formula C₆H₁₀.A racemic mixture of X and Y treated with excess H₂ and Pd/C was converted to a single compound Z (C₆H₁₂)which did not show optical activity.Suggest structure for X,Y and Z.