(a) Interpretation: Each C = C is to be labeled as E or Z . Concept introduction: The notations E or Z are used to describe the geometry around the double bond of an alkene . In E or Z compound, the molecular formula remains the same, but the arrangement of the atoms around the double bond of alkene is different.

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Answer 1

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Chapter 19, Problem 19.8P

Interpretation Introduction

(a)

Interpretation: Each C=C is to be labeled as E or Z.

Concept introduction: The notations E or Z are used to describe the geometry around the double bond of an alkene. In E or Z compound, the molecular formula remains the same, but the arrangement of the atoms around the double bond of alkene is different.

Interpretation Introduction

(b)

Interpretation: Each σ bond joining two C=C's is to be labeled as s- cis or s- trans.

Concept introduction: The notations E or Z are used to describe the geometry around the double bond of an alkene. In E or Z compound, the molecular formula remains the same, but the arrangement of the atoms around the double bond of alkene is different.

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Linoleic acid (below) is an essential fatty acid found in many vegetable oils, such as soy, peanut, and cottonseed. A key structural feature of the molecule is the cis orientation around its two double bonds, where R1 and R2 represent two different groups that form the rest of the molecule. R, CH2 `H H' (a) How many different compounds are possible, changing only the cis/trans arrangements around these two double bonds? (b) How many are possible for a similar compound with three double bonds? R3. .CH2 R4 `H H `H H'

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Q2. Draw a zig-zag representation for each molecule below showing all valence electrons on atoms other than carbon and hydrogen and include any formal charges should there be any (none of the compounds contain a ring of atoms).(a) CH3CH=CHCH(OH)CH3(b) (CH3)2CHCH2CO2CH2CH3

Answer 2

Question

Chapter 19, Problem 19.8P

Interpretation Introduction

(a)

Interpretation: Each C=C is to be labeled as E or Z.

Concept introduction: The notations E or Z are used to describe the geometry around the double bond of an alkene. In E or Z compound, the molecular formula remains the same, but the arrangement of the atoms around the double bond of alkene is different.

Interpretation Introduction

(b)

Interpretation: Each σ bond joining two C=C's is to be labeled as s- cis or s- trans.

Concept introduction: The notations E or Z are used to describe the geometry around the double bond of an alkene. In E or Z compound, the molecular formula remains the same, but the arrangement of the atoms around the double bond of alkene is different.

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Answer 3

Question

Chapter 19, Problem 19.8P

Interpretation Introduction

(a)

Interpretation: Each C=C is to be labeled as E or Z.

Concept introduction: The notations E or Z are used to describe the geometry around the double bond of an alkene. In E or Z compound, the molecular formula remains the same, but the arrangement of the atoms around the double bond of alkene is different.

Interpretation Introduction

(b)

Interpretation: Each σ bond joining two C=C's is to be labeled as s- cis or s- trans.

Concept introduction: The notations E or Z are used to describe the geometry around the double bond of an alkene. In E or Z compound, the molecular formula remains the same, but the arrangement of the atoms around the double bond of alkene is different.

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Answer 4

Question

Chapter 19, Problem 19.8P

Interpretation Introduction

(a)

Interpretation: Each C=C is to be labeled as E or Z.

Concept introduction: The notations E or Z are used to describe the geometry around the double bond of an alkene. In E or Z compound, the molecular formula remains the same, but the arrangement of the atoms around the double bond of alkene is different.

Interpretation Introduction

(b)

Interpretation: Each σ bond joining two C=C's is to be labeled as s- cis or s- trans.

Concept introduction: The notations E or Z are used to describe the geometry around the double bond of an alkene. In E or Z compound, the molecular formula remains the same, but the arrangement of the atoms around the double bond of alkene is different.

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Answer 5

Chapter 19, Problem 19.8P

Interpretation Introduction

(a)

Interpretation: Each C=C is to be labeled as E or Z.

Concept introduction: The notations E or Z are used to describe the geometry around the double bond of an alkene. In E or Z compound, the molecular formula remains the same, but the arrangement of the atoms around the double bond of alkene is different.

Interpretation Introduction

(b)

Interpretation: Each σ bond joining two C=C's is to be labeled as s- cis or s- trans.

Concept introduction: The notations E or Z are used to describe the geometry around the double bond of an alkene. In E or Z compound, the molecular formula remains the same, but the arrangement of the atoms around the double bond of alkene is different.

Answer 6

Chapter 19, Problem 19.8P

Interpretation Introduction

(a)

Interpretation: Each C=C is to be labeled as E or Z.

Concept introduction: The notations E or Z are used to describe the geometry around the double bond of an alkene. In E or Z compound, the molecular formula remains the same, but the arrangement of the atoms around the double bond of alkene is different.

Answer 7

Chapter 19, Problem 19.8P

Interpretation Introduction

(a)

Interpretation: Each C=C is to be labeled as E or Z.

Concept introduction: The notations E or Z are used to describe the geometry around the double bond of an alkene. In E or Z compound, the molecular formula remains the same, but the arrangement of the atoms around the double bond of alkene is different.

Answer 8

Interpretation Introduction

(b)

Interpretation: Each σ bond joining two C=C's is to be labeled as s- cis or s- trans.

Concept introduction: The notations E or Z are used to describe the geometry around the double bond of an alkene. In E or Z compound, the molecular formula remains the same, but the arrangement of the atoms around the double bond of alkene is different.

Answer 9

Interpretation Introduction

(b)

Interpretation: Each σ bond joining two C=C's is to be labeled as s- cis or s- trans.

Concept introduction: The notations E or Z are used to describe the geometry around the double bond of an alkene. In E or Z compound, the molecular formula remains the same, but the arrangement of the atoms around the double bond of alkene is different.

Answer 10

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Answer 11

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Answer 12

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Answer 13

Ch. 19 - Prob. 19.1P Ch. 19 - Problem 19.2 Give the structure corresponding to...Ch. 19 - Problem 19.3 Draw the structure corresponding to...Ch. 19 - Prob. 19.4P Ch. 19 - Prob. 19.5P Ch. 19 - Problem 19.6 Rank the following compounds in order...Ch. 19 - Problem 19.7 Explain how you could use IR...Ch. 19 - Prob. 19.8P Ch. 19 - Problem 19.9 How many tetrahedral stereogenic...Ch. 19 - Problem 19.10 What alcohol can be oxidized to each...

Solution Summary: The author explains that the notations E or Z describe the geometry around the double bond of an alkene.

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