Question 1

Oleic acid is an example of ________ fatty acid. A molecule of oleic acid contains a single carbon-carbon double bond and ________ carbon atoms.

Accepted Answer

A)  an unsaturated; 18 
B)  an unsaturated; 9 
C)  a saturated; 52 
D)  a saturated; 18 
E)  a saturated; 9 
A)  an unsaturated; 18 
B)  an unsaturated; 9 
C)  a saturated; 52 
D)  a saturated; 18 
E)  a saturated; 9

Question 2

How would you prepare CH3(CH2)14CH2Br from palmitic acid, CH3(CH2)14CO2H?

Accepted Answer

1. LiAlH₄ 2

Question 3

Draw the basic 4-ring skeletal structure found in steroids.

Accepted Answer

The answer of Draw the basic 4-ring skeletal structure found...

Question 4

When linoleic acid is hydrogenated, what organic compound is produced and how does its melting point compare to that of linoleic acid?

Accepted Answer

Stearic acid is prod

Question 5

Which of the following species would be expected to be insoluble in water?
(More than one answer is possible.)

Accepted Answer

A) 
   
B) 
   
C) 
   
D) 
   
A) 
   
B) 
   
C) 
   
D)

Question 6

Define lipid.

Accepted Answer

Lipids are substance

Question 7

Provide the structures of the major organic products which result when tristearin (shown below) is heated in aqueous solution of sodium hydroxide.

Accepted Answer

HOCH₂CHOHCH

Question 8

Was the compound shown below more likely isolated from an animal or a plant? Explain.

Accepted Answer

The compound shown is a polyun

Question 9

What occurs when an aqueous solution of sodium stearate is treated with a solution of calcium ions?

Accepted Answer

Calcium stearate, an

Question 10

Two families of fatty acids called the Ω- 6 and Ω-3 fatty acids are of significant interest in the area of nutrition. Which of the following structures would be classified as an Ω-3 fatty acid?

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
E) 
  
A) 
  
B) 
  
C) 
  
D) 
  
E)

Question 11

Provide the structure of a soap. Label the hydrophilic and hydrophobic regions of the molecule you have drawn.

Accepted Answer

The answer of Provide the structure of a soap. Label...

Question 12

Which reagent below could best be used to distinguish CH3(CH2)10CO2H from CH2(CH2)4CH=CH(CH2)4CO2H?

Accepted Answer

A)  NaOH, H2O 
B)  Ag(NH3)2+ 
C)  H2Cr2O7 
D)  Br2/CCl4 
E)  NH3 
A)  NaOH, H2O 
B)  Ag(NH3)2+ 
C)  H2Cr2O7 
D)  Br2/CCl4 
E)  NH3

Question 13

How can the degree of unsaturation of an oil be gauged using a solution of bromine in carbon tetrachloride?

Accepted Answer

The bromine solution is dark red in colo

Question 14

Are triglycerides simple lipids? Explain.

Accepted Answer

No, triglycerides are complex

Question 15

Which formula best characterizes hard-water scum?

Accepted Answer

A)  [CH3(CH2)16CO2]2Ca 
B)  CH3CH2CH=CHCH2CH2CH2CO2H 
C)  CH3(CH2)16CO2Na 
D)  CH3(CH2)16CO2H 
E)  CH3(CH2)16SO3Na 
A)  [CH3(CH2)16CO2]2Ca 
B)  CH3CH2CH=CHCH2CH2CH2CO2H 
C)  CH3(CH2)16CO2Na 
D)  CH3(CH2)16CO2H 
E)  CH3(CH2)16SO3Na

Question 16

Would the addition of HCl to the double bond of oleic acid, CH3(CH2)7CH= CH(CH2)7CO2H, occur with high regioselectivity? Explain.

Accepted Answer

No. The two possible carbocati

Question 17

How would you prepare CH3(CH2)14CH2NH2 from palmitic acid, CH3(CH2)14CO2H?

Accepted Answer

1. SOCl₂ 2.

Question 18

Lecithins are phospholipids wherein the alcohol choline is esterified to a phosphatidic acid. Provide the structure of choline.

Accepted Answer

The answer of Lecithins are phospholipids wherein the alcohol choline...

Question 19

Which of the following oils is the least polyunsaturated?

Accepted Answer

A)  herring oil 
B)  corn oil 
C)  olive oil 
D)  soybean oil 
E)  canola oil 
A)  herring oil 
B)  corn oil 
C)  olive oil 
D)  soybean oil 
E)  canola oil

Question 20

Which of the following oils has the highest composition of one single fatty acid?

Accepted Answer

A)  herring oil 
B)  olive oil 
C)  soybean oil 
D)  canola oil 
A)  herring oil 
B)  olive oil 
C)  soybean oil 
D)  canola oil

Exam 25: Lipids

Oleic acid is an example of ________ fatty acid. A molecule of oleic acid contains a single carbon-carbon double bond and ________ carbon atoms.

How would you prepare CH3(CH2)14CH2Br from palmitic acid, CH3(CH2)14CO2H?

Draw the basic 4-ring skeletal structure found in steroids.

When linoleic acid is hydrogenated, what organic compound is produced and how does its melting point compare to that of linoleic acid?

Which of the following species would be expected to be insoluble in water? (More than one answer is possible.)

Define lipid.

Provide the structures of the major organic products which result when tristearin (shown below) is heated in aqueous solution of sodium hydroxide.

Was the compound shown below more likely isolated from an animal or a plant? Explain.

What occurs when an aqueous solution of sodium stearate is treated with a solution of calcium ions?

Two families of fatty acids called the Ω- 6 and Ω-3 fatty acids are of significant interest in the area of nutrition. Which of the following structures would be classified as an Ω-3 fatty acid?

Provide the structure of a soap. Label the hydrophilic and hydrophobic regions of the molecule you have drawn.

Which reagent below could best be used to distinguish CH3(CH2)10CO2H from CH2(CH2)4CH=CH(CH2)4CO2H?

How can the degree of unsaturation of an oil be gauged using a solution of bromine in carbon tetrachloride?

Are triglycerides simple lipids? Explain.

Which formula best characterizes hard-water scum?

Would the addition of HCl to the double bond of oleic acid, CH3(CH2)7CH= CH(CH2)7CO2H, occur with high regioselectivity? Explain.

How would you prepare CH3(CH2)14CH2NH2 from palmitic acid, CH3(CH2)14CO2H?

Lecithins are phospholipids wherein the alcohol choline is esterified to a phosphatidic acid. Provide the structure of choline.

Which of the following oils is the least polyunsaturated?

Which of the following oils has the highest composition of one single fatty acid?

Introduction and Review

Structure and Properties of Organic Molecules

Structure and Stereochemistry of Alkanes

The Study of Chemical Reactions

Stereochemistry

Alkyl Halides: Nucleophilic Substitution and Elimination

Structure and Synthesis of Alkenes

Reactions of Alkenes

Alkynes

Structure and Synthesis of Alcohols

Reactions of Alcohols

Infrared Spectroscopy and Mass Spectrometry

Nuclear Magnetic Resonance Spectroscopy

Ethers, Epoxides, and Thioethers

Conjugated Systems, Orbital Symmetry, and Ultraviolet Spectroscopy

Aromatic Compounds

Reactions of Aromatic Compounds

Ketones and Aldehydes

Amines

Carboxylic Acids

Carboxylic Acid Derivatives

Condensations and Alpha Substitutions of Carboxyl Compounds

Carbohydrates and Nucleic Acids

Amino Acids, Peptides, and Proteins

Synthetic Polymers

Filters

Oleic acid is an example of fatty acid. A molecule of oleic acid contains a single carbon-carbon double bond and carbon atoms.

How would you prepare CH₃(CH₂)₁₄CH₂Br from palmitic acid, CH₃(CH₂)₁₄CO₂H?

Which reagent below could best be used to distinguish CH₃(CH₂)₁₀CO₂H from CH₂(CH₂)₄CH=CH(CH₂)₄CO₂H?

Would the addition of HCl to the double bond of oleic acid, CH₃(CH₂)₇CH= CH(CH₂)₇CO₂H, occur with high regioselectivity? Explain.

How would you prepare CH₃(CH₂)₁₄CH₂NH₂ from palmitic acid, CH₃(CH₂)₁₄CO₂H?