Skip to main content
Ch.15 Lipids
Timberlake - Chemistry: An Introduction to General, Organic, and Biological Chemistry 14th Edition
Timberlake14th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9781292472249당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Timberlake 14th EditionCh.15 Lipids문제 21
15장, 문제 21

Draw the condensed structural formula for a triacylglycerol that contains stearic acid and glycerol.

검증된 단계별 안내
1
Understand the components of a triacylglycerol: A triacylglycerol (also called a triglyceride) is formed by the esterification of three fatty acid molecules with one glycerol molecule. Glycerol is a three-carbon alcohol with hydroxyl (-OH) groups on each carbon, and stearic acid is a saturated fatty acid with the formula CH₃(CH₂)₁₆COOH.
Identify the functional groups involved in the reaction: The hydroxyl (-OH) groups on glycerol will react with the carboxylic acid (-COOH) groups of stearic acid to form ester bonds. This reaction releases water (H₂O) as a byproduct.
Determine the structure of the triacylglycerol: Replace each hydroxyl group on the glycerol molecule with an ester group (-COO-) that is connected to the stearic acid chain. The resulting structure will have three stearic acid chains attached to the glycerol backbone via ester linkages.
Write the condensed structural formula: Start with the glycerol backbone (CH₂, CH, CH₂) and attach the stearic acid chains to each carbon via ester bonds. The condensed formula will look like CH₂(OCO(CH₂)₁₆CH₃)-CH(OCO(CH₂)₁₆CH₃)-CH₂(OCO(CH₂)₁₆CH₃).
Double-check the structure: Ensure that the glycerol backbone is intact, each hydroxyl group has been replaced by an ester linkage, and the stearic acid chains are correctly represented. Verify that the formula reflects the triacylglycerol structure accurately.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
2m
도움이 되었나요?

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Triacylglycerol Structure

Triacylglycerols, also known as triglycerides, are lipids composed of one glycerol molecule esterified to three fatty acids. The glycerol backbone is a three-carbon alcohol, and each carbon is linked to a fatty acid via an ester bond. Understanding this structure is essential for drawing the condensed formula, as it dictates how the fatty acids are attached to the glycerol.
추천 영상:
가이드 코스
1:52
Triacylglycerols Concept 1

Fatty Acids

Fatty acids are long hydrocarbon chains with a carboxylic acid group at one end. Stearic acid, a saturated fatty acid with 18 carbon atoms, is commonly found in animal fats. Recognizing the structure of stearic acid is crucial for accurately representing it in the triacylglycerol's condensed formula, as it influences the overall properties of the lipid.
추천 영상:
가이드 코스
2:00
Fatty Acids Concept 1

Condensed Structural Formula

A condensed structural formula provides a simplified representation of a molecule, showing the arrangement of atoms without depicting all bonds explicitly. In the case of triacylglycerols, this format allows for a clear depiction of the glycerol backbone and the attached fatty acids, making it easier to visualize the molecular structure while maintaining clarity and conciseness.
추천 영상:
가이드 코스
1:53
Condensed Formula Concept 1
관련 실천
교과서 질문

How does an anti-inflammatory drug reduce inflammation?

1532
views
교과서 질문

Draw the condensed structural formula for a mixed triacylglycerol that contains two palmitic acid molecules and one oleic acid molecule on the center carbon of glycerol.

894
views
교과서 질문

How does the percentage of monounsaturated and polyunsaturated fatty acids in olive oil compare to that of canola oil?

680
views
교과서 질문

Draw the condensed structural formula for the ester in jojoba wax that is formed from arachidic acid, a 20-carbon saturated fatty acid, and 1-docosanol, CH3–(CH2)21–OH.

811
views
교과서 질문

Safflower oil is polyunsaturated, whereas olive oil is monounsaturated. Why would safflower oil have a lower melting point than olive oil?

627
views
교과서 질문

What are some effects of prostaglandins in the body?

1599
views