Chapter 26, Problem 19E

Interpretation Introduction

(a)

Interpretation:

To find the difference between a carbonyl group and a carboxyl group.

Concept introduction:

Both carbonyl and carboxyl groups are functional groups. It is known that functional groups are responsible for impartingcharacteristic behavior to a compound with which they are attached.

A $\text{C=O}$ functional group is known as a carbonyl group. This group is also known as a ketone group.

$\text{COOH}$ group is known as carboxyl group and also this group is known as a carboxylic acid group.

Interpretation Introduction

(b)

Interpretation:

To find the difference between an aldehyde and a ketone group.

Concept introduction:

Both aldehyde and ketone groups are functional groups. It is known that functional groups are responsible for imparting characteristic behavior to a compound with which they are attached.

A $\text{CHO}$ functional group is known as an aldehyde group. It contains a carbon atom attached to oxygen atom with a double bond and also this carbon atom is attached to one hydrogen atom with a single bond.

$\text{C=O}$ functional group is known as a ketone group and it contains a carbon atom that is attached to an oxygen atom with a double bond.

Interpretation Introduction

(c)

To find the difference between an acetic acid and an acetyl group.

Concept introduction:

Both acetic acid and anacetyl group are functional groups. It is known that functional groups are responsible for imparting characteristic behavior to a compound with which they are attached.

Chemical formula of acetic acid is ${\text{C}}_{\text{2}}{\text{H}}_{\text{4}}{\text{O}}_{\text{2}}$ and it contains a carboxylic acid functional group as the suffix “-ic” represents it.

An acetyl group has general chemical formula as ${\text{R-COCH}}_3$.