Chemistry for Today: General, Organic, and Biochemistry
Chemistry for Today: General, Organic, and Biochemistry
9th Edition
ISBN: 9781305960060
Author: Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Publisher: Cengage Learning
bartleby

Concept explainers

Question
Book Icon
Chapter 18, Problem 18.9E
Interpretation Introduction

(a)

Interpretation:

Whether the fatty acid CH3(CH2)14COOH is saturated or unsaturated is to be indicated and whether it is solid or a liquid is to be stated.

Concept introduction:

A fatty acid having a long aliphatic chain with no double bond is called saturated fatty acid and a fatty acid that contains at least one double bond within the fatty acid chain is called unsaturated fatty acid. Due to the presence of a long alkyl side chain in saturated fatty acids, their packing efficiency is more than those of unsaturated fatty acids. As a result, unsaturated fatty acids possess lower melting point than saturated fatty acids. Thus, most of the saturated fatty acids are solid at room temperature.

Expert Solution
Check Mark

Answer to Problem 18.9E

The fatty acid CH3(CH2)14COOH is a saturated fatty acid and it is solid at room temperature.

Explanation of Solution

The structural formula of fatty acid CH3(CH2)14COOH is given below.

Chemistry for Today: General, Organic, and Biochemistry, Chapter 18, Problem 18.9E , additional homework tip  1

Figure 1

The general name of the above fatty acid is palmitic acid. Palmitic acid has a long aliphatic chain of -C15H31 that follows the general formula of alkyl group (CnH2n+1). This shows that there is no double bond within the fatty acid chain. Therefore, the above fatty acid is a saturated fatty acid. Saturated fatty acid possesses a solid form due to favorable van der Waal’s interactions between side chains of adjacent molecule. Therefore, the saturated fatty acid is solid at room temperature.

Conclusion

The fatty acid shown in Figure 1 is a saturated fatty acid and it is solid at room temperature.

Interpretation Introduction

(b)

Interpretation:

Whether the fatty acid CH3(CH2)4CH=CHCH2CH=CH(CH2)7COOH is saturated or unsaturated is to be indicated and whether it is a solid or a liquid is to be stated.

Concept introduction:

A fatty acid having a long aliphatic chain with no double bond is called saturated fatty acid and a fatty acid that contains at least one double bond within the fatty acid chain is called unsaturated fatty acid. Due to the presence of a long alkyl side chain in saturated fatty acids, their packing efficiency is more than those of unsaturated fatty acids. As a result, unsaturated fatty acids possess lower melting point than saturated fatty acids. Thus, most of the saturated fatty acids are solid at room temperature.

Expert Solution
Check Mark

Answer to Problem 18.9E

The fatty acid CH3(CH2)4CH=CHCH2CH=CH(CH2)7COOH is an unsaturated fatty acid and it is a liquid at room temperature.

Explanation of Solution

The structural formula of fatty acid CH3(CH2)4CH=CHCH2CH=CH(CH2)7COOH is given below.

Chemistry for Today: General, Organic, and Biochemistry, Chapter 18, Problem 18.9E , additional homework tip  2

Figure 2

The general name of the above fatty acid is lenoleic acid. The structural formula of lenoleic acid shows that there are two double bonds in the carbon chain. Therefore, lenoleic acid is an unsaturated fatty acid. The side chain in unsaturated fatty acids possess less van der Waal’s interactions between side chains of adjacent molecule. Therefore, the unsaturated fatty acid is a liquid at room temperature.

Conclusion

The fatty acid shown in Figure 2 is an unsaturated fatty acid and it is a liquid at room temperature.

Interpretation Introduction

(c)

Interpretation:

Whether the fatty acid CH3(C14H24)COOH is saturated or unsaturated is to be indicated and whether it is a solid or a liquid is to be stated.

Concept introduction:

A fatty acid having a long aliphatic chain with no double bond is called saturated fatty acid and a fatty acid that contains at least one double bond within the fatty acid chain is called unsaturated fatty acid. Due to the presence of a long alkyl side chain in saturated fatty acids, their packing efficiency is more than those of unsaturated fatty acids. As a result, unsaturated fatty acids possess lower melting point than saturated fatty acids. Thus, most of the saturated fatty acids are solid at room temperature.

Expert Solution
Check Mark

Answer to Problem 18.9E

The fatty acid CH3(C14H24)COOH is an unsaturated fatty acid and it is a liquid at room temperature.

Explanation of Solution

The structural formula of fatty acid CH3(C14H24)COOH is given below.

Chemistry for Today: General, Organic, and Biochemistry, Chapter 18, Problem 18.9E , additional homework tip  3

Figure 3

The general name of the above fatty acid is palmitolic acid. The structural formula of palmitolic acid contains double bonds within the fatty acid chain. Therefore, palmitolic acid is an unsaturated fatty acid. The side chain in unsaturated fatty acids possess less van der Waal’s interactions between side chains of adjacent molecule. Therefore, the unsaturated fatty acid is a liquid at room temperature.

Conclusion

The fatty acid shown in Figure 3 is an unsaturated fatty acid and it is a liquid at room temperature.

Interpretation Introduction

(d)

Interpretation:

Whether the fatty acid CH3(C10H20)COOH is saturated or unsaturated is to be indicated and whether it is a solid or a liquid is to be stated.

Concept introduction:

A fatty acid having a long aliphatic chain with no double bond is called saturated fatty acid and a fatty acid that contains at least one double bond within the fatty acid chain is called unsaturated fatty acid. Due to the presence of a long alkyl side chain in saturated fatty acids, their packing efficiency is more than those of unsaturated fatty acids. As a result, unsaturated fatty acids possess lower melting point than saturated fatty acids. Thus, most of the saturated fatty acids are solid at room temperature.

Expert Solution
Check Mark

Answer to Problem 18.9E

The fatty acid CH3(C10H20)COOH is a saturated fatty acid and it is solid at room temperature.

Explanation of Solution

The structural formula of fatty acid CH3(C10H20)COOH is given below.

Chemistry for Today: General, Organic, and Biochemistry, Chapter 18, Problem 18.9E , additional homework tip  4

Figure 4

The general name of the above fatty acid is lauric acid. Lauric acid has a long aliphatic chain of -C11H23 that follows the general formula of alkyl group (CnH2n+1). This shows that there is no double bond in the fatty acid chain. Therefore, the above fatty acid is a saturated fatty acid. Saturated fatty acid possesses a solid form due to favorable van der Waal’s interactions between side chains of adjacent molecule. Therefore, the saturated fatty acid is a solid at room temperature.

Conclusion

The fatty acid shown in Figure 4 is a saturated fatty acid and it is a solid at room temperature.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
2. Identify whether the following fatty acids are saturated or unsaturated. a. CH3(CH2)sCH=CH(CH2)7COOH b. CH3(CH2)7CH=CH(CH2)7COOH c. CH3(CH2)10COOH d. CH3(CH2)16COOH e. CH;CH2(CH=CHCH2)3(CH2)6COOH 3. Explain the importance of lipid content in the structure of biological membranes
The structure of the fatty acid, palmitoleic acid, is shown below. How would you classify this fatty acid? a. polyunsaturated b. waxy c. monounsaturated d. saturated
V F2 # 3 E 80 F3 What is the difference between integral and peripheral proteins? $ 4 F4 R A) Integral proteins are required for the cell to function, while peripheral proteins are accessory. B) Integral proteins are found on the outside of the cell, while peripheral proteins are found on the inside of the cell. C) Integral proteins extend through the lipid bilayer, and peripheral proteins are just on the surface of the inside or outside of the cell. Question 11 of 19 D) Integral proteins are found on the inside of the cell, while peripheral proteins are found on the outside of the cell. E) Integral proteins are channel proteins and peripheral proteins act as enzymes. % 5 F5 T <6 MacBook Air F6 Y & 7 ♡ F7 U * 8 DII F8 1 ( - 9 F9 0 O F10

Chapter 18 Solutions

Chemistry for Today: General, Organic, and Biochemistry

Ch. 18 - What structural feature of a fatty acid is...Ch. 18 - How are fats and oils structurally similar? How...Ch. 18 - From Figure 18.7, arrange the following substances...Ch. 18 - Draw the structure of a triglyceride that contains...Ch. 18 - Prob. 18.15ECh. 18 - The percentage of fatty acid composition of two...Ch. 18 - Prob. 18.17ECh. 18 - Prob. 18.18ECh. 18 - Prob. 18.19ECh. 18 - Why is the hydrogenation of vegetable oils of...Ch. 18 - Prob. 18.21ECh. 18 - Write reactions to show how each of the following...Ch. 18 - Draw the structure of a wax formed from oleic acid...Ch. 18 - Prob. 18.24ECh. 18 - Draw the structure of a wax formed from stearic...Ch. 18 - Prob. 18.26ECh. 18 - Prob. 18.27ECh. 18 - Draw the general block diagram structure of a...Ch. 18 - Draw the structure of a phosphoglyceride...Ch. 18 - Describe two biological roles served by the...Ch. 18 - Prob. 18.31ECh. 18 - What is the structural difference between a...Ch. 18 - Prob. 18.33ECh. 18 - Prob. 18.34ECh. 18 - List two structural differences between...Ch. 18 - Prob. 18.36ECh. 18 - Describe the structural similarities and...Ch. 18 - Give another name for glycolipids. In what tissues...Ch. 18 - Prob. 18.39ECh. 18 - Prob. 18.40ECh. 18 - How does the polarity of the phosphoglycerides...Ch. 18 - Prob. 18.42ECh. 18 - Prob. 18.43ECh. 18 - Prob. 18.44ECh. 18 - Explain how bile salts aid in the digestion of...Ch. 18 - Prob. 18.46ECh. 18 - Prob. 18.47ECh. 18 - Prob. 18.48ECh. 18 - Prob. 18.49ECh. 18 - Prob. 18.50ECh. 18 - How are testosterone and progesterone structurally...Ch. 18 - Prob. 18.52ECh. 18 - Prob. 18.53ECh. 18 - Prob. 18.54ECh. 18 - Prob. 18.55ECh. 18 - Prob. 18.56ECh. 18 - Prob. 18.57ECh. 18 - Prob. 18.58ECh. 18 - Prob. 18.59ECh. 18 - Prob. 18.60ECh. 18 - Prob. 18.61ECh. 18 - Prob. 18.62ECh. 18 - Prob. 18.63ECh. 18 - Prob. 18.64ECh. 18 - Prob. 18.65ECh. 18 - Prob. 18.66ECh. 18 - Prob. 18.67ECh. 18 - Prob. 18.68ECh. 18 - Prob. 18.69ECh. 18 - Prob. 18.70ECh. 18 - Prob. 18.71ECh. 18 - When a doughnut is placed on a napkin, the napkin...Ch. 18 - Fats belong to the class of organic compounds...Ch. 18 - Identify each of the following characteristics as...Ch. 18 - Identify which sex hormones testosterone,...Ch. 18 - Prob. 18.76ECh. 18 - In diseases of the gallbladder, which of the...Ch. 18 - Steroids are classified as: a.carbohydrates....Ch. 18 - Accumulation of cholesterol leads to the hardening...Ch. 18 - Cholesterol, in spite of its bad reputation, is an...Ch. 18 - Bile is manufactured in the: a. duodenum. b....Ch. 18 - The basic structure of cell membrane is a: a....Ch. 18 - The mineralocorticoid _____ is a product of the...Ch. 18 - Prob. 18.84ECh. 18 - Prob. 18.85E
Knowledge Booster
Background pattern image
Chemistry
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Chemistry: The Molecular Science
Chemistry
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:Cengage Learning
Text book image
Introductory Chemistry: A Foundation
Chemistry
ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
Text book image
Chemistry
Chemistry
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
Text book image
Chemistry: An Atoms First Approach
Chemistry
ISBN:9781305079243
Author:Steven S. Zumdahl, Susan A. Zumdahl
Publisher:Cengage Learning
Text book image
Chemistry
Chemistry
ISBN:9781133611097
Author:Steven S. Zumdahl
Publisher:Cengage Learning
Text book image
Chemistry by OpenStax (2015-05-04)
Chemistry
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:OpenStax