(a) Interpretation: State true or false for the following statement: Conformations have the same molecular formula and the same connectivity but differ in the three-dimensional arrangement of their atoms in space. Concept Introduction: Conformations are any three dimensional arrangement of atoms of a molecule arises due to rotation around the single bond.

Question

c. Serricornin, the female-produced sex pheromone of the cigarette beetle, has the following structure. OH What is the maximum number of possible stereoisomers? Is this structure a meso compound? d. Please consider the natural product alkaloids shown below. Are these two structures enantiomers, diastereomers or conformers? H HO H H HN HO HN R R с R=H cinchonidine R=ET cinchonine H

Answer 1

Question

Chapter 11, Problem 20P

Interpretation Introduction

(a)

Interpretation:

State true or false for the following statement: Conformations have the same molecular formula and the same connectivity but differ in the three-dimensional arrangement of their atoms in space.

Concept Introduction:

Conformations are any three dimensional arrangement of atoms of a molecule arises due to rotation around the single bond.

Interpretation Introduction

(b)

Interpretation:

State true or false for the following statement:In all conformations of ethane, propane, butane, and higher alkanes, all C−C−C and H−C−H bond angles are approximately 109.5Ο

Concept Introduction:

Conformers are spatial three dimensional arrangement of atom of a molecule in space.

Interpretation Introduction

(c)

Interpretation:

State true or false for the following statement: In a cyclohexane ring, if an axial bond is above the plane of the ring on a particular carbon, axial bonds on the two adjacent carbon are below the plane of the ring.

Concept Introduction:

Axial is a position on a chair conformation of cyclohexane ring. It is extended from the ring parallel to the imaginary axis of the ring.

Interpretation Introduction

(d)

Interpretation:

State true or false for the following statement:In a cyclohexane ring, if an equatorial bond is above the plane of the ring on a particular carbon, equatorial bonds on the two adjacent carbons are below the plane of the ring.

Concept Introduction:

In chair conformation of cyclohexane equatorial position extends form the ring almost perpendicular to the imaginary axis of the ring.

Interpretation Introduction

(e)

Interpretation:

State true or false for the following statement: The more stable chair conformation of a cyclohexane ring has more substituent group in equatorial positions.

Concept Introduction:

A six-membered ring is more stable when the maximum number of substituent groups is equatorial.

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Answer 2

Question

Chapter 11, Problem 20P

Interpretation Introduction

(a)

Interpretation:

State true or false for the following statement: Conformations have the same molecular formula and the same connectivity but differ in the three-dimensional arrangement of their atoms in space.

Concept Introduction:

Conformations are any three dimensional arrangement of atoms of a molecule arises due to rotation around the single bond.

Interpretation Introduction

(b)

Interpretation:

State true or false for the following statement:In all conformations of ethane, propane, butane, and higher alkanes, all C−C−C and H−C−H bond angles are approximately 109.5Ο

Concept Introduction:

Conformers are spatial three dimensional arrangement of atom of a molecule in space.

Interpretation Introduction

(c)

Interpretation:

State true or false for the following statement: In a cyclohexane ring, if an axial bond is above the plane of the ring on a particular carbon, axial bonds on the two adjacent carbon are below the plane of the ring.

Concept Introduction:

Axial is a position on a chair conformation of cyclohexane ring. It is extended from the ring parallel to the imaginary axis of the ring.

Interpretation Introduction

(d)

Interpretation:

State true or false for the following statement:In a cyclohexane ring, if an equatorial bond is above the plane of the ring on a particular carbon, equatorial bonds on the two adjacent carbons are below the plane of the ring.

Concept Introduction:

In chair conformation of cyclohexane equatorial position extends form the ring almost perpendicular to the imaginary axis of the ring.

Interpretation Introduction

(e)

Interpretation:

State true or false for the following statement: The more stable chair conformation of a cyclohexane ring has more substituent group in equatorial positions.

Concept Introduction:

A six-membered ring is more stable when the maximum number of substituent groups is equatorial.

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Answer 3

Question

Chapter 11, Problem 20P

Interpretation Introduction

(a)

Interpretation:

State true or false for the following statement: Conformations have the same molecular formula and the same connectivity but differ in the three-dimensional arrangement of their atoms in space.

Concept Introduction:

Conformations are any three dimensional arrangement of atoms of a molecule arises due to rotation around the single bond.

Interpretation Introduction

(b)

Interpretation:

State true or false for the following statement:In all conformations of ethane, propane, butane, and higher alkanes, all C−C−C and H−C−H bond angles are approximately 109.5Ο

Concept Introduction:

Conformers are spatial three dimensional arrangement of atom of a molecule in space.

Interpretation Introduction

(c)

Interpretation:

State true or false for the following statement: In a cyclohexane ring, if an axial bond is above the plane of the ring on a particular carbon, axial bonds on the two adjacent carbon are below the plane of the ring.

Concept Introduction:

Axial is a position on a chair conformation of cyclohexane ring. It is extended from the ring parallel to the imaginary axis of the ring.

Interpretation Introduction

(d)

Interpretation:

State true or false for the following statement:In a cyclohexane ring, if an equatorial bond is above the plane of the ring on a particular carbon, equatorial bonds on the two adjacent carbons are below the plane of the ring.

Concept Introduction:

In chair conformation of cyclohexane equatorial position extends form the ring almost perpendicular to the imaginary axis of the ring.

Interpretation Introduction

(e)

Interpretation:

State true or false for the following statement: The more stable chair conformation of a cyclohexane ring has more substituent group in equatorial positions.

Concept Introduction:

A six-membered ring is more stable when the maximum number of substituent groups is equatorial.

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Answer 4

Question

Chapter 11, Problem 20P

Interpretation Introduction

(a)

Interpretation:

State true or false for the following statement: Conformations have the same molecular formula and the same connectivity but differ in the three-dimensional arrangement of their atoms in space.

Concept Introduction:

Conformations are any three dimensional arrangement of atoms of a molecule arises due to rotation around the single bond.

Interpretation Introduction

(b)

Interpretation:

State true or false for the following statement:In all conformations of ethane, propane, butane, and higher alkanes, all C−C−C and H−C−H bond angles are approximately 109.5Ο

Concept Introduction:

Conformers are spatial three dimensional arrangement of atom of a molecule in space.

Interpretation Introduction

(c)

Interpretation:

State true or false for the following statement: In a cyclohexane ring, if an axial bond is above the plane of the ring on a particular carbon, axial bonds on the two adjacent carbon are below the plane of the ring.

Concept Introduction:

Axial is a position on a chair conformation of cyclohexane ring. It is extended from the ring parallel to the imaginary axis of the ring.

Interpretation Introduction

(d)

Interpretation:

State true or false for the following statement:In a cyclohexane ring, if an equatorial bond is above the plane of the ring on a particular carbon, equatorial bonds on the two adjacent carbons are below the plane of the ring.

Concept Introduction:

In chair conformation of cyclohexane equatorial position extends form the ring almost perpendicular to the imaginary axis of the ring.

Interpretation Introduction

(e)

Interpretation:

State true or false for the following statement: The more stable chair conformation of a cyclohexane ring has more substituent group in equatorial positions.

Concept Introduction:

A six-membered ring is more stable when the maximum number of substituent groups is equatorial.

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Answer 5

Chapter 11, Problem 20P

Interpretation Introduction

(a)

Interpretation:

State true or false for the following statement: Conformations have the same molecular formula and the same connectivity but differ in the three-dimensional arrangement of their atoms in space.

Concept Introduction:

Conformations are any three dimensional arrangement of atoms of a molecule arises due to rotation around the single bond.

Interpretation Introduction

(b)

Interpretation:

State true or false for the following statement:In all conformations of ethane, propane, butane, and higher alkanes, all C−C−C and H−C−H bond angles are approximately 109.5Ο

Concept Introduction:

Conformers are spatial three dimensional arrangement of atom of a molecule in space.

Interpretation Introduction

(c)

Interpretation:

State true or false for the following statement: In a cyclohexane ring, if an axial bond is above the plane of the ring on a particular carbon, axial bonds on the two adjacent carbon are below the plane of the ring.

Concept Introduction:

Axial is a position on a chair conformation of cyclohexane ring. It is extended from the ring parallel to the imaginary axis of the ring.

Interpretation Introduction

(d)

Interpretation:

State true or false for the following statement:In a cyclohexane ring, if an equatorial bond is above the plane of the ring on a particular carbon, equatorial bonds on the two adjacent carbons are below the plane of the ring.

Concept Introduction:

In chair conformation of cyclohexane equatorial position extends form the ring almost perpendicular to the imaginary axis of the ring.

Interpretation Introduction

(e)

Interpretation:

State true or false for the following statement: The more stable chair conformation of a cyclohexane ring has more substituent group in equatorial positions.

Concept Introduction:

A six-membered ring is more stable when the maximum number of substituent groups is equatorial.

Answer 6

Chapter 11, Problem 20P

Interpretation Introduction

(a)

Interpretation:

State true or false for the following statement: Conformations have the same molecular formula and the same connectivity but differ in the three-dimensional arrangement of their atoms in space.

Concept Introduction:

Conformations are any three dimensional arrangement of atoms of a molecule arises due to rotation around the single bond.

Answer 7

Chapter 11, Problem 20P

Interpretation Introduction

(a)

Interpretation:

State true or false for the following statement: Conformations have the same molecular formula and the same connectivity but differ in the three-dimensional arrangement of their atoms in space.

Concept Introduction:

Conformations are any three dimensional arrangement of atoms of a molecule arises due to rotation around the single bond.

Answer 8

Interpretation Introduction

(b)

Interpretation:

State true or false for the following statement:In all conformations of ethane, propane, butane, and higher alkanes, all C−C−C and H−C−H bond angles are approximately 109.5Ο

Concept Introduction:

Conformers are spatial three dimensional arrangement of atom of a molecule in space.

Answer 9

Interpretation Introduction

(b)

Interpretation:

State true or false for the following statement:In all conformations of ethane, propane, butane, and higher alkanes, all C−C−C and H−C−H bond angles are approximately 109.5Ο

Concept Introduction:

Conformers are spatial three dimensional arrangement of atom of a molecule in space.

Answer 10

Interpretation Introduction

(c)

Interpretation:

State true or false for the following statement: In a cyclohexane ring, if an axial bond is above the plane of the ring on a particular carbon, axial bonds on the two adjacent carbon are below the plane of the ring.

Concept Introduction:

Axial is a position on a chair conformation of cyclohexane ring. It is extended from the ring parallel to the imaginary axis of the ring.

Answer 11

Interpretation Introduction

(c)

Interpretation:

State true or false for the following statement: In a cyclohexane ring, if an axial bond is above the plane of the ring on a particular carbon, axial bonds on the two adjacent carbon are below the plane of the ring.

Concept Introduction:

Axial is a position on a chair conformation of cyclohexane ring. It is extended from the ring parallel to the imaginary axis of the ring.

Answer 12

Interpretation Introduction

(d)

Interpretation:

State true or false for the following statement:In a cyclohexane ring, if an equatorial bond is above the plane of the ring on a particular carbon, equatorial bonds on the two adjacent carbons are below the plane of the ring.

Concept Introduction:

In chair conformation of cyclohexane equatorial position extends form the ring almost perpendicular to the imaginary axis of the ring.

Answer 13

Interpretation Introduction

(d)

Interpretation:

State true or false for the following statement:In a cyclohexane ring, if an equatorial bond is above the plane of the ring on a particular carbon, equatorial bonds on the two adjacent carbons are below the plane of the ring.

Concept Introduction:

In chair conformation of cyclohexane equatorial position extends form the ring almost perpendicular to the imaginary axis of the ring.

Answer 14

Interpretation Introduction

(e)

Interpretation:

State true or false for the following statement: The more stable chair conformation of a cyclohexane ring has more substituent group in equatorial positions.

Concept Introduction:

A six-membered ring is more stable when the maximum number of substituent groups is equatorial.

Answer 15

Interpretation Introduction

(e)

Interpretation:

State true or false for the following statement: The more stable chair conformation of a cyclohexane ring has more substituent group in equatorial positions.

Concept Introduction:

A six-membered ring is more stable when the maximum number of substituent groups is equatorial.

Answer 16

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Answer 27

Ch. 11.2 - Prob. 11.1QC Ch. 11.3 - Prob. 11.2QC Ch. 11.3 - Prob. 11.3QC Ch. 11.4 - Problem 11-4 Write the molecular formula and IUPAC...Ch. 11.6 - Problem 11-5 Write the molecular formula and IUPAC...Ch. 11.7 - Prob. 11.6QC Ch. 11.8 - Prob. 11.7QC Ch. 11.9 - Prob. 11.8QC Ch. 11.10 - Prob. 11.9QC Ch. 11 - 11-11 Define: Hydrocarbon Alkane Saturated...

Solution Summary: The author states conformations have the same molecular formula and connectivity but differ in the three-dimensional arrangement of their atoms in space.

Concept explainers

(e)

Interpretation:

State true or false for the following statement: The more stable chair conformation of a cyclohexane ring has more substituent group in equatorial positions.

Concept Introduction:

A six-membered ring is more stable when the maximum number of substituent groups is equatorial.

Chapter 11 Solutions

Solution Summary: The author states conformations have the same molecular formula and connectivity but differ in the three-dimensional arrangement of their atoms in space.

Concept explainers

(e) Interpretation: State true or false for the following statement: The more stable chair conformation of a cyclohexane ring has more substituent group in equatorial positions. Concept Introduction: A six-membered ring is more stable when the maximum number of substituent groups is equatorial.

Chapter 11 Solutions

(e)

Interpretation:

State true or false for the following statement: The more stable chair conformation of a cyclohexane ring has more substituent group in equatorial positions.

Concept Introduction:

A six-membered ring is more stable when the maximum number of substituent groups is equatorial.