Chapter 19, Problem 32P

Interpretation Introduction

(a)

Interpretation:

The hydrophobic and hydrophilic part of the 3, 6, 9, 12, 15-octadecapentaenoic acid should be labeled.

Concept Introduction:

Fatty acids are long chain carboxylic acid, which may or may not have unsaturation in the molecule. They react with glycerol to form triglycerides. The reaction is known as esterification as a carboxylic acid group reacts with the alcoholic group to form an ester group.

Unsaturated fatty acids can be defined as the long chain fatty acids which have a long hydrocarbon chain with −COOH group. In unsaturated fatty acids, the carbon chain must have at least one double bond.

Interpretation Introduction

(b)

Interpretation:

The melting point of 3, 6, 9, 12, 15-octadecapentaenoic acid and oleic acidneeds to be compared.

Concept Introduction:

Fatty acids are long chain carboxylic acid, which may or may not have unsaturation in the molecule. They react with glycerol to form triglycerides. The reaction is known as esterification as a carboxylic acid group reacts with the alcoholic group to form an ester group.

Unsaturated fatty acids can be defined as the long chain fatty acids which have a long hydrocarbon chain with −COOH group. In unsaturated fatty acids, the carbon chain must have at least one double bond.

Interpretation Introduction

(c)

Interpretation:

The physical state of 3, 6, 9, 12, 15-octadecapentaenoic acidas solid or liquid at room temperature should be determined.

Concept Introduction:

Fatty acids are long chain carboxylic acid, which may or may not have unsaturation in the molecule. They react with glycerol to form triglycerides. The reaction is known as esterification as a carboxylic acid group reacts with the alcoholic group to form an ester group.

Unsaturated fatty acids can be defined as the long chain fatty acids which have a long hydrocarbon chain with −COOH group. In unsaturated fatty acids, the carbon chain must have at least one double bond.

Interpretation Introduction

(d)

Interpretation:

The omega-n designation for the 3, 6, 9, 12, 15-octadecapentaenoic acid should be determined.

Concept Introduction:

Fatty acids are long chain carboxylic acid, which may or may not have unsaturation in the molecule. They react with glycerol to form triglycerides. The reaction is known as esterification as a carboxylic acid group reacts with the alcoholic group to form an ester group.

Unsaturated fatty acids can be defined as the long chain fatty acids which have a long hydrocarbon chain with −COOH group. In unsaturated fatty acids, the carbon chain must have at least one double bond.