Chapter 20, Problem 38A

(a)

Interpretation Introduction

Interpretation:

The functional group whether contains oxygen atom or not is to written.

Concept introduction:

There are various functional groups in organic compounds.

Functional group	General formula
Halogen	$R-X$
Alcohol	$R-OH$
Carboxylic acid	$R-COOH$
Aldehydes	$R-CHO$
Ketones	$RCO{R}^{\text{'}}$
Esters	$RCOO{R}^{\text{'}}$
Amines	$R-N{H}_2$

Answer to Problem 38A

Carboxylic functional group contains oxygen.

Explanation of Solution

Carboxylic acid has general formula $R-COOH$ . Thus, it contains oxygen in its functional group.

(b)

Interpretation Introduction

Interpretation:

The functional group whether contains oxygen atom or not is to written.

Concept introduction:

There are various functional groups in organic compounds.

Functional group	General formula
Halogen	$R-X$
Alcohol	$R-OH$
Carboxylic acid	$R-COOH$
Aldehydes	$R-CHO$
Ketones	$RCO{R}^{\text{'}}$
Esters	$RCOO{R}^{\text{'}}$
Amines	$R-N{H}_2$

Answer to Problem 38A

Alcohol functional group contains oxygen.

Explanation of Solution

Alcohol has general formula $R-OH$ . Thus, it contains oxygen in its functional group.

(c)

Interpretation Introduction

Interpretation:

The functional group whether contains oxygen atom or not is to written.

Concept introduction:

There are various functional groups in organic compounds.

Functional group	General formula
Halogen	$R-X$
Alcohol	$R-OH$
Carboxylic acid	$R-COOH$
Aldehydes	$R-CHO$
Ketones	$RCO{R}^{\text{'}}$
Esters	$RCOO{R}^{\text{'}}$
Amines	$R-N{H}_2$

Answer to Problem 38A

Ketone functional group contains oxygen.

Explanation of Solution

Ketones has general formula $RCO{R}^{\text{'}}$ . Thus, it contains oxygen in its functional group.

(d)

Interpretation Introduction

Interpretation:

The functional group whether contains oxygen atom or not is to written.

Concept introduction:

There are various functional groups in organic compounds.

Functional group	General formula
Halogen	$R-X$
Alcohol	$R-OH$
Carboxylic acid	$R-COOH$
Aldehydes	$R-CHO$
Ketones	$RCO{R}^{\text{'}}$
Esters	$RCOO{R}^{\text{'}}$
Amines	$R-N{H}_2$

Answer to Problem 38A

Aldehyde functional group contains oxygen.

Explanation of Solution

Aldehyde has general formula $R-CHO$ . Thus, it contains oxygen in its functional group.

(e)

Interpretation Introduction

Interpretation:

The functional group whether contains oxygen atom or not is to written.

Concept introduction:

There are various functional groups in organic compounds.

Functional group	General formula
Halogen	$R-X$
Alcohol	$R-OH$
Carboxylic acid	$R-COOH$
Aldehydes	$R-CHO$
Ketones	$RCO{R}^{\text{'}}$
Esters	$RCOO{R}^{\text{'}}$
Amines	$R-N{H}_2$

Answer to Problem 38A

Amine functional group doesn’t contain oxygen.

Explanation of Solution

Amine has general formula $R-N{H}_2$ . Thus, it doesn’t contain oxygen in its functional group.