Domanda del libro di testo
Which of these fatty acids has the lower melting point? Explain why.
a. Linoleic acid
b. Stearic acid
544
views
Ch.23 Lipids
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187
Non è quello che usi tu?Cambia libro di testoScegli un libro di testo diverso
TOC.tableOfContents
- Ch.1 Matter and Measurements27
- Ch.2 Atoms and the Periodic Table20
- Ch.3 Ionic Compounds8
- Ch.4 Molecular Compounds23
- Ch.5 Classification & Balancing of Chemical Reactions12
- Ch.6 Chemical Reactions: Mole and Mass Relationships28
- Ch.7 Chemical Reactions: Energy, Rate and Equilibrium64
- Ch.8 Gases, Liquids and Solids24
- Ch.9 Solutions52
- Ch.10 Acids and Bases25
- Ch.11 Nuclear Chemistry22
- Ch.12 Introduction to Organic Chemistry: Alkanes57
- Ch.13 Alkenes, Alkynes, and Aromatic Compounds47
- Ch.14 Some Compounds with Oxygen, Sulfur, or a Halogen50
- Ch.15 Aldehydes and Ketones45
- Ch.16 Amines42
- Ch.17 Carboxylic Acids and Their Derivatives57
- Ch.18 Amino Acids and Proteins82
- Ch.19 Enzymes and Vitamins63
- Ch.20 Carbohydrates44
- Ch.21 The Generation of Biochemical Energy65
- Ch.22 Carbohydrate Metabolism45
- Ch.23 Lipids42
- Ch.24 Lipid Metabolism33
- Ch.25 Protein and Amino Acid Metabolism24
- Ch.26 Nucleic Acids and Protein Synthesis45
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187Non è quello che usi tu?Cambia libro di testo
Capitolo 23, Problema 38
Draw the structure of glyceryl trilaurate, which is made from glycerol and three lauric acid molecules.
Guida verificata passo dopo passo1
Understand the components: Glyceryl trilaurate is a triester formed from glycerol (a three-carbon molecule with three hydroxyl groups, \( \text{C}_3\text{H}_8\text{O}_3 \)) and three lauric acid molecules (a 12-carbon saturated fatty acid, \( \text{C}_{12}\text{H}_{24}\text{O}_2 \)).
Recognize the esterification process: Each hydroxyl group on glycerol reacts with the carboxylic acid group (\( \text{-COOH} \)) of lauric acid to form an ester bond (\( \text{-COO} \)) and release water (\( \text{H}_2\text{O} \)).
Draw the glycerol backbone: Start with a vertical chain of three carbon atoms, each bonded to a hydroxyl group (\( \text{-OH} \)) and sufficient hydrogens to satisfy the valency of carbon.
Attach the lauric acid chains: Replace each hydroxyl group on glycerol with an ester bond (\( \text{-COO} \)) connected to the 12-carbon chain of lauric acid. Ensure that each lauric acid chain is fully saturated (no double bonds) and ends with a methyl group (\( \text{-CH}_3 \)).
Verify the structure: Confirm that the final structure has three ester bonds, a glycerol backbone, and three lauric acid chains, each containing 12 carbons. The molecular formula of glyceryl trilaurate should be \( \text{C}_{39}\text{H}_{74}\text{O}_6 \).
Risposta video verificata per un problema simile:
Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Durata del video:
2mConcetti chiave
Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.
Glycerol Structure
Glycerol, also known as glycerin, is a simple polyol compound with three hydroxyl (–OH) groups. Its structure consists of a three-carbon chain, where each carbon is attached to a hydroxyl group. This unique structure allows glycerol to act as a backbone for triglycerides, forming the basis for lipid molecules like glyceryl trilaurate.
Video consigliato:
Percorso guidato
1:20
Glycerol Metabolism Concept 2
Fatty Acids
Fatty acids are long hydrocarbon chains with a carboxylic acid group at one end. Lauric acid, specifically, is a saturated fatty acid with a 12-carbon chain. When fatty acids like lauric acid react with glycerol, they form esters, which are the building blocks of triglycerides, such as glyceryl trilaurate.
Video consigliato:
Percorso guidato
2:00Fatty Acids Concept 1
Esterification Reaction
Esterification is a chemical reaction between an alcohol and a carboxylic acid, resulting in the formation of an ester and water. In the case of glyceryl trilaurate, glycerol undergoes esterification with three lauric acid molecules, leading to the formation of a triglyceride. This reaction is crucial in the synthesis of fats and oils in biological systems.
Video consigliato:
Percorso guidato
0:46Ester Reactions: Esterification Example 1
Pratica correlata
Domanda del libro di testo
Is the reaction shown here esterification, hydrogenation, hydrolysis, saponification, or substitution?
1458
views
Domanda del libro di testo
Which of these fatty acids has the higher melting point? Explain why.
a. Linolenic acid
b. Stearic acid
809
views
Domanda del libro di testo
There are two isomeric triacylglycerol molecules whose components are glycerol, one palmitic acid unit, and two stearic acid units. Draw the structures of both, and explain how they differ.
754
views
Domanda del libro di testo
Draw the structures of all products you would obtain by saponification of the following lipid with aqueous KOH. What are the names of the products?
807
views
Domanda del libro di testo
Are the carbon–carbon double bonds in naturally occurring fatty acids primarily cis or trans?
1491
views