The molecule with the lowest potential energy needs to be drawn for the following condition: Here, R 1 , R 2 and R 3 all are methyl groups. Concept Introduction: The molecule with lowest potential energy is most stable. In the chair conformation of the cyclohexane, the stable conformation is when large groups are present in the equatorial positions. The equatorial positions in the chair conformation points away from the ring thus, there is less steric hinderance.

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Answer 1

Question

Chapter 7, Problem 12E

(a)

Interpretation Introduction

Interpretation: The molecule with the lowest potential energy needs to be drawn for the following condition:

Here,

R1, R2 and R3 all are methyl groups.

Concept Introduction: The molecule with lowest potential energy is most stable. In the chair conformation of the cyclohexane, the stable conformation is when large groups are present in the equatorial positions. The equatorial positions in the chair conformation points away from the ring thus, there is less steric hinderance.

(b)

Interpretation Introduction

Interpretation: The molecule with the lowest potential energy needs to be drawn for the following condition:

Here, R1, R2 and R3 is methyl, t-butyl and methyl group respectively.

Concept Introduction: The molecule with lowest potential energy is most stable. In the chair conformation of the cyclohexane, the stable conformation is when large groups are present in the equatorial positions. The equatorial positions in the chair conformation points away from the ring thus, there is less steric hinderance.

(c)

Interpretation Introduction

Interpretation: The molecule with the lowest potential energy needs to be drawn for the following condition:

Here, R1, R2 and R3 is methyl, ethyl and propyl group respectively.

Concept Introduction: The molecule with lowest potential energy is most stable. In the chair conformation of the cyclohexane, the stable conformation is when large groups are present in the equatorial positions. The equatorial positions in the chair conformation points away from the ring thus, there is less steric hinderance.

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X, the molecule shown below, is not planar. The terminal ring at one end is actually skewed up relative to that at the other end. Is X chiral? Yes or no?

What are the most stable Newman projections for 2,3 dimethylbutane

For the following two conformations of 2,3-dimethylbutane, determine (choose 1 option below) the total energy cost associated with all torsional strain and steric strain. 1. a) (6 kJ/mol x 2) + (11 kJ/mol x3) = 45 kJ/mol b) 3.8 kJ/mol x 4 = 15.2 kJ/mol c) 3.8 kJ/mol x 3 = 11.4 kJ/mol d) 11kJ/mol x 4 = 44 kJ/mol 2. a) 6 kJ/mol + 11 KJ/mol= 17 kJ/mol b) 3.8 kJ/mol x 3 = 11.4 kJ/mol c) (6kJ/mol x 2 ) 3.8 kJ/mol = 15.8 kJ/mol d) (6kJ/mol x 2 ) + 11kJ/mol = 23 kJ/mol

Answer 2

Question

Chapter 7, Problem 12E

(a)

Interpretation Introduction

Interpretation: The molecule with the lowest potential energy needs to be drawn for the following condition:

Here,

R1, R2 and R3 all are methyl groups.

Concept Introduction: The molecule with lowest potential energy is most stable. In the chair conformation of the cyclohexane, the stable conformation is when large groups are present in the equatorial positions. The equatorial positions in the chair conformation points away from the ring thus, there is less steric hinderance.

(b)

Interpretation Introduction

Interpretation: The molecule with the lowest potential energy needs to be drawn for the following condition:

Here, R1, R2 and R3 is methyl, t-butyl and methyl group respectively.

Concept Introduction: The molecule with lowest potential energy is most stable. In the chair conformation of the cyclohexane, the stable conformation is when large groups are present in the equatorial positions. The equatorial positions in the chair conformation points away from the ring thus, there is less steric hinderance.

(c)

Interpretation Introduction

Interpretation: The molecule with the lowest potential energy needs to be drawn for the following condition:

Here, R1, R2 and R3 is methyl, ethyl and propyl group respectively.

Concept Introduction: The molecule with lowest potential energy is most stable. In the chair conformation of the cyclohexane, the stable conformation is when large groups are present in the equatorial positions. The equatorial positions in the chair conformation points away from the ring thus, there is less steric hinderance.

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Answer 3

Question

Chapter 7, Problem 12E

(a)

Interpretation Introduction

Interpretation: The molecule with the lowest potential energy needs to be drawn for the following condition:

Here,

R1, R2 and R3 all are methyl groups.

Concept Introduction: The molecule with lowest potential energy is most stable. In the chair conformation of the cyclohexane, the stable conformation is when large groups are present in the equatorial positions. The equatorial positions in the chair conformation points away from the ring thus, there is less steric hinderance.

(b)

Interpretation Introduction

Interpretation: The molecule with the lowest potential energy needs to be drawn for the following condition:

Here, R1, R2 and R3 is methyl, t-butyl and methyl group respectively.

Concept Introduction: The molecule with lowest potential energy is most stable. In the chair conformation of the cyclohexane, the stable conformation is when large groups are present in the equatorial positions. The equatorial positions in the chair conformation points away from the ring thus, there is less steric hinderance.

(c)

Interpretation Introduction

Interpretation: The molecule with the lowest potential energy needs to be drawn for the following condition:

Here, R1, R2 and R3 is methyl, ethyl and propyl group respectively.

Concept Introduction: The molecule with lowest potential energy is most stable. In the chair conformation of the cyclohexane, the stable conformation is when large groups are present in the equatorial positions. The equatorial positions in the chair conformation points away from the ring thus, there is less steric hinderance.

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Answer 4

Question

Chapter 7, Problem 12E

(a)

Interpretation Introduction

Interpretation: The molecule with the lowest potential energy needs to be drawn for the following condition:

Here,

R1, R2 and R3 all are methyl groups.

Concept Introduction: The molecule with lowest potential energy is most stable. In the chair conformation of the cyclohexane, the stable conformation is when large groups are present in the equatorial positions. The equatorial positions in the chair conformation points away from the ring thus, there is less steric hinderance.

(b)

Interpretation Introduction

Interpretation: The molecule with the lowest potential energy needs to be drawn for the following condition:

Here, R1, R2 and R3 is methyl, t-butyl and methyl group respectively.

Concept Introduction: The molecule with lowest potential energy is most stable. In the chair conformation of the cyclohexane, the stable conformation is when large groups are present in the equatorial positions. The equatorial positions in the chair conformation points away from the ring thus, there is less steric hinderance.

(c)

Interpretation Introduction

Interpretation: The molecule with the lowest potential energy needs to be drawn for the following condition:

Here, R1, R2 and R3 is methyl, ethyl and propyl group respectively.

Concept Introduction: The molecule with lowest potential energy is most stable. In the chair conformation of the cyclohexane, the stable conformation is when large groups are present in the equatorial positions. The equatorial positions in the chair conformation points away from the ring thus, there is less steric hinderance.

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Answer 5

Chapter 7, Problem 12E

(a)

Interpretation Introduction

Interpretation: The molecule with the lowest potential energy needs to be drawn for the following condition:

Here,

R1, R2 and R3 all are methyl groups.

Concept Introduction: The molecule with lowest potential energy is most stable. In the chair conformation of the cyclohexane, the stable conformation is when large groups are present in the equatorial positions. The equatorial positions in the chair conformation points away from the ring thus, there is less steric hinderance.

(b)

Interpretation Introduction

Interpretation: The molecule with the lowest potential energy needs to be drawn for the following condition:

Here, R1, R2 and R3 is methyl, t-butyl and methyl group respectively.

Concept Introduction: The molecule with lowest potential energy is most stable. In the chair conformation of the cyclohexane, the stable conformation is when large groups are present in the equatorial positions. The equatorial positions in the chair conformation points away from the ring thus, there is less steric hinderance.

(c)

Interpretation Introduction

Interpretation: The molecule with the lowest potential energy needs to be drawn for the following condition:

Here, R1, R2 and R3 is methyl, ethyl and propyl group respectively.

Concept Introduction: The molecule with lowest potential energy is most stable. In the chair conformation of the cyclohexane, the stable conformation is when large groups are present in the equatorial positions. The equatorial positions in the chair conformation points away from the ring thus, there is less steric hinderance.

Answer 6

Chapter 7, Problem 12E

(a)

Interpretation Introduction

Interpretation: The molecule with the lowest potential energy needs to be drawn for the following condition:

Here,

R1, R2 and R3 all are methyl groups.

Concept Introduction: The molecule with lowest potential energy is most stable. In the chair conformation of the cyclohexane, the stable conformation is when large groups are present in the equatorial positions. The equatorial positions in the chair conformation points away from the ring thus, there is less steric hinderance.

Answer 7

Chapter 7, Problem 12E

(a)

Interpretation Introduction

Interpretation: The molecule with the lowest potential energy needs to be drawn for the following condition:

Here,

R1, R2 and R3 all are methyl groups.

Concept Introduction: The molecule with lowest potential energy is most stable. In the chair conformation of the cyclohexane, the stable conformation is when large groups are present in the equatorial positions. The equatorial positions in the chair conformation points away from the ring thus, there is less steric hinderance.

Answer 8

(b)

Interpretation Introduction

Interpretation: The molecule with the lowest potential energy needs to be drawn for the following condition:

Here, R1, R2 and R3 is methyl, t-butyl and methyl group respectively.

Concept Introduction: The molecule with lowest potential energy is most stable. In the chair conformation of the cyclohexane, the stable conformation is when large groups are present in the equatorial positions. The equatorial positions in the chair conformation points away from the ring thus, there is less steric hinderance.

Answer 9

(b)

Interpretation Introduction

Interpretation: The molecule with the lowest potential energy needs to be drawn for the following condition:

Here, R1, R2 and R3 is methyl, t-butyl and methyl group respectively.

Concept Introduction: The molecule with lowest potential energy is most stable. In the chair conformation of the cyclohexane, the stable conformation is when large groups are present in the equatorial positions. The equatorial positions in the chair conformation points away from the ring thus, there is less steric hinderance.

Answer 10

(c)

Interpretation Introduction

Interpretation: The molecule with the lowest potential energy needs to be drawn for the following condition:

Here, R1, R2 and R3 is methyl, ethyl and propyl group respectively.

Concept Introduction: The molecule with lowest potential energy is most stable. In the chair conformation of the cyclohexane, the stable conformation is when large groups are present in the equatorial positions. The equatorial positions in the chair conformation points away from the ring thus, there is less steric hinderance.

Answer 11

(c)

Interpretation Introduction

Interpretation: The molecule with the lowest potential energy needs to be drawn for the following condition:

Here, R1, R2 and R3 is methyl, ethyl and propyl group respectively.

Concept Introduction: The molecule with lowest potential energy is most stable. In the chair conformation of the cyclohexane, the stable conformation is when large groups are present in the equatorial positions. The equatorial positions in the chair conformation points away from the ring thus, there is less steric hinderance.

Answer 12

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Answer 13

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Answer 14

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Answer 15

Ch. 7 - Prob. 1CTQ Ch. 7 - Prob. 2CTQ Ch. 7 - Prob. 3CTQ Ch. 7 - Draw wedge and dash skeletal representations of...Ch. 7 - Label each ring in Figure 7.2 cis or trans.Ch. 7 - Prob. 6CTQ Ch. 7 - Prob. 7CTQ Ch. 7 - Prob. 8CTQ Ch. 7 - a model of cyclohexane in a chair conformation,...Ch. 7 - Prob. 10CTQ

Solution Summary: The author explains that the molecule with the lowest potential energy needs to be drawn for the following conditions.

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