Author Question: Arachidonic acid is a C20 acid that is involved in the biosynthesis of prostaglandins, an important ... (Read 61 times)

Deast7027 · **on:** Aug 23, 2018

Arachidonic acid is a C₂₀ acid that is involved in the biosynthesis of prostaglandins, an important class of biomolecules. Provide the IUPAC name of arachidinic acid.

Question 2

Circle the hydrophilic part of sodium 4-dodecylbenzenesulfonate, a synthetic detergent, and put a rectangle around the hydrophobic part.

Question 3

Circle the hydrophilic part of sodium palmitate, a soap that is the sodium salt of a fatty acid, and put a rectangle around the hydrophobic part.

Question 4

Provide the general structure of a triglyceride.

Question 5

Why do hydrogenated fats have higher boiling points than the triglycerides from which they are derived?

verrinzo · **Reply #1 on:** Aug 23, 2018

Answer to Question 1

(5Z,8Z,11Z,14Z)-5,8,11,14-icosatetraenoic acid

Answer to Question 2

Answer to Question 3

Answer to Question 4

R, R and R are typcially C₁₀-C₁₉ chains, with or without cis C-C double bonds.

Answer to Question 5

The saturated side chains of hydrogenated fats pack together more efficiently than the unsaturated side chains of triglycerides, which contain cis double bonds, thereby raising the melting point.