Question 1

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

Accepted Answer

1. SOCl₂
2....

Question 2

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

Accepted Answer

The compound shown is a polyun...

Question 3

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 4

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

Accepted Answer

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

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)   E) None of the above
F) A) and D)

Question 6

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

Accepted Answer

Calcium stearate, an...

Question 7

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)   NH3F) C) and D)
G) B) and C)

Question 8

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 oilE) B) and C)
F) A) and C)

Question 9

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 10

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

Accepted Answer

1. LiAlH₄
2...

Question 11

Are triglycerides simple lipids? Explain.

Accepted Answer

No, triglycerides are complex ...

Question 12

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 13

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; 9F) B) and C)
G) D) and E)

Question 14

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 15

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 16

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)  F) B) and D)
G) B) and E)

Question 17

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 18

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 oilF) C) and E)
G) A) and D)

Question 19

Define lipid.

Accepted Answer

Lipids are substance...

Question 20

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) 16SO3NaF) B) and C)
G) A) and B)

Exam 25: Lipids

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

Correct AnswerverifiedCalcium stearate, an...View AnswerShow Answer

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

Correct AnswerverifiedHOCH2CHOHCH...View AnswerShow Answer

Define lipid.

Correct AnswerverifiedLipids are substance...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following oils is the least polyunsaturated?

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct Answerverified1. SOCl22....View AnswerShow Answer

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

Correct AnswerverifiedThe bromine solution is dark red in colo...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Are triglycerides simple lipids? Explain.

Correct AnswerverifiedNo, triglycerides are complex ...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

Which formula best characterizes hard-water scum?

Correct AnswerverifiedShow Answer

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

Correct Answerverified1. LiAlH42...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedNo. The two possible carbocati...View AnswerShow Answer

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

Correct AnswerverifiedStearic acid is prod...View AnswerShow Answer

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

Correct AnswerverifiedThe compound shown is a polyun...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

Correct Answer
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Calcium stearate, an...
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Correct Answer
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HOCH₂CHOHCH...
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Correct Answer
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Lipids are substance...
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Correct Answer
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Correct Answer
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Correct Answer
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How would you prepare CH₃(CH₂)₁₄CH₂NH₂ from palmitic acid, CH₃(CH₂)₁₄CO₂H?

Correct Answer
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1. SOCl₂
2....
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The bromine solution is dark red in colo...
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Correct Answer
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Oleic acid is an example of fatty acid. A molecule of oleic acid contains a single carbon-carbon double bond and carbon atoms.

Correct Answer
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Correct Answer
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No, triglycerides are complex ...
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Correct Answer
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Correct Answer
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How would you prepare CH₃(CH₂)₁₄CH₂Br from palmitic acid, CH₃(CH₂)₁₄CO₂H?

Correct Answer
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1. LiAlH₄
2...
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Correct Answer
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Would the addition of HCl to the double bond of oleic acid, CH₃(CH₂)₇CH= CH(CH₂)₇CO₂H, occur with high regioselectivity? Explain.

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No. The two possible carbocati...
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Correct Answer
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Stearic acid is prod...
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Correct Answer
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The compound shown is a polyun...
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Which reagent below could best be used to distinguish CH₃(CH₂) ₁₀CO₂H from CH₂(CH₂) ₄CH=CH(CH₂) ₄CO₂H?

Correct Answer
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