The rank of each compound in order of increasing heat of hydrogenation. Interpretation: The rank of each compound in order of increasing heat of hydrogenation is to be shown. Concept introduction: Heat of hydrogenation aids in find out the stability of double bonded compounds. The addition of hydrogen atom in an unsaturated compound known as hydrogenation and the amount of energy released during the process of hydrogenation known as heat of hydrogenation. Heat of hydrogenation is always shown by negative sign; if the value of heat of hydrogenation is small then double bonded compounds possess more stability and vice-versa.

Question

Draw the structure consistent with each description. a.(2E,4E)-octa-2,4-diene in the s-trans conformation b.(3E,5Z)-nona-3,5-diene in the s-cis conformation c.(3Z,5Z)-4,5-dimethyldeca-3,5-diene. Draw both the s-cis and s-trans conformations.

Answer 1

Question

Chapter 15.2, Problem 15.1P

(a)

Interpretation Introduction

To determine: The rank of each compound in order of increasing heat of hydrogenation.

Interpretation: The rank of each compound in order of increasing heat of hydrogenation is to be shown.

Concept introduction: Heat of hydrogenation aids in find out the stability of double bonded compounds. The addition of hydrogen atom in an unsaturated compound known as hydrogenation and the amount of energy released during the process of hydrogenation known as heat of hydrogenation. Heat of hydrogenation is always shown by negative sign; if the value of heat of hydrogenation is small then double bonded compounds possess more stability and vice-versa.

(b)

Interpretation Introduction

To determine: The rank of each compound in order of increasing heat of hydrogenation.

Interpretation: The rank of each compound in order of increasing heat of hydrogenation is to be shown.

Concept introduction: Heat of hydrogenation aids in find out the stability of double bonded compounds. The addition of hydrogen atom in an unsaturated compound known as hydrogenation and the amount of energy released during the process of hydrogenation known as heat of hydrogenation. Heat of hydrogenation is always shown by negative sign; if the value of heat of hydrogenation is small then double bonded compounds possess more stability and vice-versa.

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