Chapter 3, Problem 35P

(a)

Interpretation Introduction

Interpretation: Balanced equations for the combustion of propanal and acetone should be written.

Concept introduction: When a hydrocarbon is burnt in the presence of air, the products formed include water vapor and carbon dioxide. This phenomenon is termed as combustion.

The general reaction for the combustion of hydrocarbon is as follows:

  $2{\text{C}}_n{\text{H}}_{2n+2}+\left(3n+1\right){\text{O}}_{\text{2}}\to 2n{\text{CO}}_{\text{2}}+\left(2n+2\right){\text{H}}_{\text{2}}\text{O}+\text{heat}$

Where,

• $n$ represents the number of carbons in an alkane.

In general,the combustion of nay fuel liberates ${\text{CO}}_{\text{2}}$ and water vapor. In accordance with the conservation of mass, the net reactants consumed are equal to net products formed in any balanced equation.

(b)

Interpretation Introduction

Interpretation: Energy difference between propanal and acetone and the one that has lower energy content should be determined.

Concept introduction: When a hydrocarbon is burnt in the presence of air the products formed include water vapor and carbon dioxide. This phenomenon is termed as combustion.

The general reaction for the combustion of hydrocarbon is as follows:

  $2{\text{C}}_n{\text{H}}_{2n+2}+\left(3n+1\right){\text{O}}_{\text{2}}\to 2n{\text{CO}}_{\text{2}}+\left(2n+2\right){\text{H}}_{\text{2}}\text{O}+\text{heat}$

Where,

• $n$ represents the number of carbon in alkane.

In general combustion of may fuel liberates ${\text{CO}}_{\text{2}}$ and water vapor. In accordance with the conservation of mass, the net reactants consumed are equal to net products formed in any balanced equation.

(c)

Interpretation Introduction

Interpretation:Out of propanal and acetone and the one that is thermodynamically stable should be identified.

Concept introduction: When a hydrocarbon is burnt in the presence of air the products formed include water vapor and carbon dioxide. This phenomenon is termed as combustion.

The general reaction for the combustion of hydrocarbon is as follows:

  $2{\text{C}}_n{\text{H}}_{2n+2}+\left(3n+1\right){\text{O}}_{\text{2}}\to 2n{\text{CO}}_{\text{2}}+\left(2n+2\right){\text{H}}_{\text{2}}\text{O}+\text{heat}$

Where,

• $n$ represents the number of carbon in alkane.

In general,the combustion of nay fuel liberates ${\text{CO}}_{\text{2}}$ and water vapor. In accordance with the conservation of mass, the net reactants consumed are equal to net products formed in any balanced equation.