Organic Chemistry (6th Edition)
Organic Chemistry (6th Edition)
6th Edition
ISBN: 9781260119107
Author: Janice Gorzynski Smith
Publisher: McGraw Hill Education
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Chapter 14.9, Problem 15P
Interpretation Introduction

(a)

Interpretation: The diene that has the larger heat of hydrogenation is to be identified.

Concept introduction: Diene is a hydrocarbon that contains two C=C double bonds in a compound.

Conjugated diene consists of two double bonds that are separated by a single bond, whereas isolated diene also consists of two double bond but they are separated by two more carbon atoms.

The example that shows the basic difference between conjugated diene and isolated diene is shown below.

Organic Chemistry (6th Edition), Chapter 14.9, Problem 15P , additional homework tip  1

Figure 1

The stability of conjugated diene is more than isolated diene. Due to which the heat of hydrogenation is smaller for conjugated diene, whereas heat of hydrogenation for isolated diene is larger.

Interpretation Introduction

(b)

Interpretation: The diene that has the larger heat of hydrogenation is to be identified.

Concept introduction: Diene is a hydrocarbon that contains two C=C double bonds in a compound.

Conjugated diene consists of two double bonds that are separated by a single bond, whereas isolated diene also consists of two double bond but they are separated by two more carbon atoms.

The example that shows the basic difference between conjugated diene and isolated diene is shown below.

Organic Chemistry (6th Edition), Chapter 14.9, Problem 15P , additional homework tip  2

Figure 1

The stability of conjugated diene is more than isolated diene. Due to which the heat of hydrogenation is smaller for conjugated diene, whereas heat of hydrogenation for isolated diene is larger.

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