Chapter 20, Problem 20.55QP

(a)

Interpretation Introduction

Interpretation: The structures of the three fats are to be drawn which are formed by the reaction of glycerol with the given acids.

Concept introduction: Fats are the biomolecular compounds which are also known as triglycerides or lipids. It is one of the important macro nutrient found in our blood. Polyunsaturated triglycerides are the compounds comprises of double or triple bonds between the carbons.

Triglycerides are the tri-esters of fatty acid and glycerol. It is formed by the addition of glycerol with three fatty acids. Glycerol molecule comprises of three hydroxyl $\left(\text{OH}\right)$ groups. All lipids are water insoluble. These are the store houses of energy in the body. The fatty acids are of both types that are saturated and unsaturated. The unsaturated fatty acids are those which contain one or more $-\text{CH}=\text{CH}-$ double bonds in their chain.

To determine: The structure of the fat formed by the reaction of glycerol with octanoic acid $\left({\text{C}}_{\text{7}}{\text{H}}_{\text{15}}\text{COOH}\right)$.

(b)

Interpretation Introduction

To determine: The structure of the fat formed by the reaction of glycerol with decanoic acid $\left({\text{C}}_{\text{9}}{\text{H}}_{\text{19}}\text{COOH}\right)$.

(c)

Interpretation Introduction

To determine: The structure of the fat formed by the reaction of glycerol with dodecanoic acid $\left({\text{C}}_{11}{\text{H}}_{23}\text{COOH}\right)$.