Question 1

What reagent is needed to convert CH3(CH2)14CH2OH to CH3(CH2)14CHO?

Accepted Answer

PCC (pyrid

Question 2

What reagent is needed to convert CH3(CH2)14CO2H to CH3(CH2)14COCl?

Accepted Answer

Question 3

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 4

Terpenes which contain two isoprene units are called ________.

Accepted Answer

A)  monoterpenes 
B)  sesquiterpenes 
C)  diterpenes 
D)  triterpenes 
E)  tetraterpenes 
A)  monoterpenes 
B)  sesquiterpenes 
C)  diterpenes 
D)  triterpenes 
E)  tetraterpenes

Question 5

Which of the following peaks would one expect to observe as a major, strong peak in the IR spectrum of a lipid wax?

Accepted Answer

A)  3200-3500 cm-1 
B)  2710 cm-1 
C)  2200 cm-1 
D)  1730 cm-1 
E)  1620 cm-1 
A)  3200-3500 cm-1 
B)  2710 cm-1 
C)  2200 cm-1 
D)  1730 cm-1 
E)  1620 cm-1

Question 6

The following compound was isolated from the liverwort Porella chilensis and has shown to be effective in inhibiting the human pathogen Pseudomonas aeruginosa. Show that this structure belongs to the terpene family by dividing the molecule up into each isoprene unit and then give the terpene classification.

Accepted Answer

The answer of The following compound was isolated from the...

Question 7

What reagents would you use to prepare octadecanal from stearic acid,

Accepted Answer

1. LiAlH₄ 2

Question 8

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

Accepted Answer

1) SOCl₂ 2)

Question 9

Which of the following chemical reactions could be used to distinguish between a polyunsaturated vegetable oil and a petroleum oil containing a mixture of saturated and unsaturated hydrocarbons?

Accepted Answer

A)  addition of bromine in carbon tetrachloride 
B)  ozonolysis 
C)  hydrogenation 
D)  lipidification 
E)  saponification 
A)  addition of bromine in carbon tetrachloride 
B)  ozonolysis 
C)  hydrogenation 
D)  lipidification 
E)  saponification

Question 10

Which of the following oils would consume the greatest number of equivalents of hydrogen when subject to catalytic hydrogenation?

Accepted Answer

A)  corn oil 
B)  olive oil 
C)  canola oil 
D)  linseed oil 
A)  corn oil 
B)  olive oil 
C)  canola oil 
D)  linseed oil

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

Draw the compound below in a stable chair conformation.

Accepted Answer

The answer of Draw the compound below in a stable...

Question 13

Provide the structure of the major organic compound that results when palmitic acid, CH3(CH2)14CO2H, is heated in methanol containing catalytic acid.

Accepted Answer

Question 14

Which of the following is an advantage of using an alkylbenzenesulfonate detergent over a common soap?

Accepted Answer

A)  The alkylbenzenesulfonate detergent is uncharged. 
B)  The alkylbenzenesulfonate detergent has no hydrophobic region. 
C)  Greases are not emulsified by soaps. 
D)  Calcium, magnesium, and iron salts of sulfonic acids are soluble in water. 
E)  Sulfonates are protonated at higher pH's than are carboxylates. 
A)  The alkylbenzenesulfonate detergent is uncharged. 
B)  The alkylbenzenesulfonate detergent has no hydrophobic region. 
C)  Greases are not emulsified by soaps. 
D)  Calcium, magnesium, and iron salts of sulfonic acids are soluble in water. 
E)  Sulfonates are protonated at higher pH's than are carboxylates.

Question 15

Which of the following natural products can be correctly classified as a steroid?

Accepted Answer

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

Question 16

Which best describes the lipid shown below?

Accepted Answer

A)  wax 
B)  triglyceride 
C)  saturated fatty acid 
D)  unsaturated fatty acid 
E)  lecithin 
A)  wax 
B)  triglyceride 
C)  saturated fatty acid 
D)  unsaturated fatty acid 
E)  lecithin

Question 17

Which of the following terms best describes the compound below?
CH3(CH2)7CH  
CH(CH2)7CO2H

Accepted Answer

A)  an unsaturated fatty acid 
B)  a triglyceride 
C)  a synthetic detergent 
D)  a micelle 
E)  isoprene 
A)  an unsaturated fatty acid 
B)  a triglyceride 
C)  a synthetic detergent 
D)  a micelle 
E)  isoprene

Question 18

Provide a sketch of a lipid bilayer. Label the hydrophobic and hydrophilic regions.

Accepted Answer

The answer of Provide a sketch of a lipid bilayer....

Question 19

What do we call a mixture of two immiscible liquids in which one liquid is dispersed throughout the other in small droplets?

Accepted Answer

The answer of What do we call a mixture of...

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

What reagent is needed to convert CH3(CH2)14CH2OH to CH3(CH2)14CHO?

What reagent is needed to convert CH3(CH2)14CO2H to CH3(CH2)14COCl?

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

Terpenes which contain two isoprene units are called ________.

Which of the following peaks would one expect to observe as a major, strong peak in the IR spectrum of a lipid wax?

What reagents would you use to prepare octadecanal from stearic acid,

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

Which of the following chemical reactions could be used to distinguish between a polyunsaturated vegetable oil and a petroleum oil containing a mixture of saturated and unsaturated hydrocarbons?

Which of the following oils would consume the greatest number of equivalents of hydrogen when subject to catalytic hydrogenation?

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

Draw the compound below in a stable chair conformation.

Provide the structure of the major organic compound that results when palmitic acid, CH3(CH2)14CO2H, is heated in methanol containing catalytic acid.

Which of the following is an advantage of using an alkylbenzenesulfonate detergent over a common soap?

Which of the following natural products can be correctly classified as a steroid?

Which best describes the lipid shown below?

Which of the following terms best describes the compound below? CH3(CH2)7CH CH(CH2)7CO2H

Provide a sketch of a lipid bilayer. Label the hydrophobic and hydrophilic regions.

What do we call a mixture of two immiscible liquids in which one liquid is dispersed throughout the other in small droplets?

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

Structure and Bonding

Acids and Bases; Functional Groups

Structure and Stereochemistry of Alkanes

The Study of Chemical Reactions

Stereochemistry

Alkyl Halides; Nucleophilic Substitution

Structure and Synthesis of Alkenes; Elimination

Reactions of Alkenes

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

What reagent is needed to convert CH₃(CH₂)₁₄CH₂OH to CH₃(CH₂)₁₄CHO?

What reagent is needed to convert CH₃(CH₂)₁₄CO₂H to CH₃(CH₂)₁₄COCl?

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

Provide the structure of the major organic compound that results when palmitic acid, CH₃(CH₂)₁₄CO₂H, is heated in methanol containing catalytic acid.

Which of the following terms best describes the compound below? CH₃(CH₂)₇CH CH(CH₂)₇CO₂H