Chapter 15, Problem 15.49AP

Interpretation Introduction

(a)

Interpretation:

The increasing order of heat of formation for the given compounds is to be stated.

Concept introduction:

During the formation of one mole of substance, the amount of heat absorbed or evolved is known as heat of formation. In case of isomeric compounds of hydrocarbons, the order of heat of formation of various isomers is shown below.

$\text{Conjugated}\text{dienes}<\text{Unconjugated}\text{dienes}<\text{Alkynes}<\text{Cumulenes}$

Interpretation Introduction

(b)

Interpretation:

The increasing order of heat of formation for the given compounds is to be stated.

Concept introduction:

During the formation of one mole of substance, the amount of heat absorbed or evolved is known as heat of formation. In case of isomeric compounds of hydrocarbons, the order of heat of formation of various isomers is shown below.

$\text{Conjugated}\text{dienes}<\text{Unconjugated}\text{dienes}<\text{Alkynes}<\text{Cumulenes}$

Interpretation Introduction

(c)

Interpretation:

The increasing order of heat of formation for the given compounds is to be stated.

Concept introduction:

During the formation of one mole of substance, the amount of heat absorbed or evolved is known as heat of formation. In case of isomeric compounds of hydrocarbons, the order of heat of formation of various isomers is shown below.

$\text{Conjugated}\text{dienes}<\text{Unconjugated}\text{dienes}<\text{Alkynes}<\text{Cumulenes}$