Question 1

What term describes the sodium salt of a long-chain fatty acid?

Accepted Answer

A) esterate 
B) ester 
C) soap 
D) triglyceride 
E) bile salt 
A) esterate 
B) ester 
C) soap 
D) triglyceride 
E) bile salt

Question 2

Which of the following is a generic acyl group?

Accepted Answer

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

Question 3

What is the IUPAC name for the missing product in the following equation?

Accepted Answer

A) propyl ethanoate 
B) propyl acetate 
C) ethyl propate 
D) ethyl propanoate 
E) ethyl propanoic acid anhydride 
A) propyl ethanoate 
B) propyl acetate 
C) ethyl propate 
D) ethyl propanoate 
E) ethyl propanoic acid anhydride

Question 4

The carboxyl group is found in all fatty acids.

Accepted Answer

A) True 
 B)False

Question 5

What other product is released when an anhydride is formed by the combination of two carboxylic acids?

Accepted Answer

A) alcohol 
B) water 
C) ester 
D) HCl 
E) hydrogen 
A) alcohol 
B) water 
C) ester 
D) HCl 
E) hydrogen

Question 6

Traces of H+ can catalyze both the formation of an ester and its hydrolysis.

Accepted Answer

A) True 
 B)False

Question 7

Long chain carboxylic acids are known as which of the following?

Accepted Answer

A) fatty acids 
B) polymers 
C) polycarboxylic acids 
D) esters 
E) poly acids 
A) fatty acids 
B) polymers 
C) polycarboxylic acids 
D) esters 
E) poly acids

Question 8

The ester shown can be produced by heating together a carboxylic acid and an alcohol in the presence of a trace of acid.What carboxylic acid and alcohol are needed?

Accepted Answer

A) propanoic acid and methanol 
B) methanoic acid and isopropyl alcohol 
C) 2-methylpropanoic acid and methanol 
D) acetic acid and 2-methyl propanol 
E) 2-methyl butanoic acid and methanol 
A) propanoic acid and methanol 
B) methanoic acid and isopropyl alcohol 
C) 2-methylpropanoic acid and methanol 
D) acetic acid and 2-methyl propanol 
E) 2-methyl butanoic acid and methanol

Question 9

A phosphate ester is formed when phosphoric acid reacts with which of the following types of compounds?

Accepted Answer

A) ester 
B) base 
C) alcohol 
D) carboxylic acid 
E) thio compound 
A) ester 
B) base 
C) alcohol 
D) carboxylic acid 
E) thio compound

Question 10

What class of compounds is primarily responsible for the pleasant smell of many fruits?

Accepted Answer

A) carboxylic acids 
B) esters 
C) carboxylate salts 
D) acid chlorides 
E) alcohols 
A) carboxylic acids 
B) esters 
C) carboxylate salts 
D) acid chlorides 
E) alcohols

Question 11

Which word best describes the odors of large carboxylic acids?

Accepted Answer

A) fruity 
B) floral 
C) minty 
D) foul 
E) Both fruity and floral are correct. 
A) fruity 
B) floral 
C) minty 
D) foul 
E) Both fruity and floral are correct.

Question 12

Saponification is hydrogenation of an ester under basic conditions.

Accepted Answer

A) True 
 B)False

Question 13

What is the common name of the following compound?

Accepted Answer

A) β-methylcaproic acid 
B) 2-methylvaleric acid 
C) 3-methylpentanoic acid 
D) γ-methylcaproic acid 
E) β-methylvaleric acid 
A) β-methylcaproic acid 
B) 2-methylvaleric acid 
C) 3-methylpentanoic acid 
D) γ-methylcaproic acid 
E) β-methylvaleric acid

Question 14

Which statement best explains why propanoic acid (M.W.= 74) boils at a much higher temperature than hexane (M.W.= 86)?

Accepted Answer

A) Lower molecular weights tend to boil at higher temperatures. 
B) Propanoic acid has weaker intermolecular forces than hexane. 
C) Propanoic acid molecules can hydrogen bond with other propanoic molecules but hexane is non-polar and cannot hydrogen bond. 
D) Chains with fewer carbon atoms tend to boil at higher temperatures than ones with more carbon atoms. 
E) None of the choices are correct. 
A) Lower molecular weights tend to boil at higher temperatures. 
B) Propanoic acid has weaker intermolecular forces than hexane. 
C) Propanoic acid molecules can hydrogen bond with other propanoic molecules but hexane is non-polar and cannot hydrogen bond. 
D) Chains with fewer carbon atoms tend to boil at higher temperatures than ones with more carbon atoms. 
E) None of the choices are correct.

Question 15

Which of the following is the term that describes a compound that acts as a pain killer?

Accepted Answer

A) analpheric 
B) analgesic 
C) prostaglandin 
D) hydrophilic 
E) pheromone 
A) analpheric 
B) analgesic 
C) prostaglandin 
D) hydrophilic 
E) pheromone

Question 16

Which of the following statements concerning carboxylic acids is FALSE?

Accepted Answer

A) Carboxylic acids are hydrogen ion acceptors. 
B) The functional group of a carboxylic acid is condensed as COOH or CO2H. 
C) Carboxylic acids form strong intermolecular hydrogen bonds. 
D) Carboxylic acids are weak acids. 
E) The water solubility of a carboxylic acid decreases with an increase in the number of carbons in the carbon chain. 
A) Carboxylic acids are hydrogen ion acceptors. 
B) The functional group of a carboxylic acid is condensed as COOH or CO2H. 
C) Carboxylic acids form strong intermolecular hydrogen bonds. 
D) Carboxylic acids are weak acids. 
E) The water solubility of a carboxylic acid decreases with an increase in the number of carbons in the carbon chain.

Question 17

Which formula best represents the structure of acetic acid when it is dissolved in a basic solution?

Accepted Answer

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

Question 18

The reaction shown below between an alcohol and phosphoric acid produces a phosphoester.What is the general structure of a phosphoester?

Accepted Answer

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

Question 19

The first step in the biochemical breakdown of sugars involves the formation of which of the following?

Accepted Answer

A) a phosphate ester 
B) a thioester 
C) a conventional ester 
D) glycogen 
E) DNA 
A) a phosphate ester 
B) a thioester 
C) a conventional ester 
D) glycogen 
E) DNA

Question 20

What carboxylic acid is produced by the oxidation reaction shown?

Accepted Answer

A) CH3CH2CH2COOH 
B)    
C)    
D)    
E)    
A) CH3CH2CH2COOH 
B)    
C)    
D)    
E)

Exam 14: Carboxylic Acids and Carboxylic Acid Derivatives

What term describes the sodium salt of a long-chain fatty acid?

Which of the following is a generic acyl group?

What is the IUPAC name for the missing product in the following equation?

The carboxyl group is found in all fatty acids.

What other product is released when an anhydride is formed by the combination of two carboxylic acids?

Traces of H+ can catalyze both the formation of an ester and its hydrolysis.

Long chain carboxylic acids are known as which of the following?

The ester shown can be produced by heating together a carboxylic acid and an alcohol in the presence of a trace of acid.What carboxylic acid and alcohol are needed?

A phosphate ester is formed when phosphoric acid reacts with which of the following types of compounds?

What class of compounds is primarily responsible for the pleasant smell of many fruits?

Which word best describes the odors of large carboxylic acids?

Saponification is hydrogenation of an ester under basic conditions.

What is the common name of the following compound?

Which statement best explains why propanoic acid (M.W.= 74) boils at a much higher temperature than hexane (M.W.= 86)?

Which of the following is the term that describes a compound that acts as a pain killer?

Which of the following statements concerning carboxylic acids is FALSE?

Which formula best represents the structure of acetic acid when it is dissolved in a basic solution?

The reaction shown below between an alcohol and phosphoric acid produces a phosphoester.What is the general structure of a phosphoester?

The first step in the biochemical breakdown of sugars involves the formation of which of the following?

What carboxylic acid is produced by the oxidation reaction shown?

Chemistry:methods and Measurement

The Structure of the Atom and the Periodic Table

Structure and Properties of Ionic and Covalent Compounds

Calculations, Chemical Changes, and the Chemical Equation

States of Matter- Gases, Liquids, and Solids

Solutions

Energy, Rate and Equilibrium

Acids and Bases

The Nucleus, Radioactivity, and Nuclear Medicine

An Introduction to Organic Chemistry- the Saturated Hydrocarbons

The Unsaturated Hydrocarbons- Alkenes, Alkynes, and Aromatics

Alcohols, Phenols, Thiols, and Ethers

Aldehydes and Ketones

Amines and Amides

Carbohydrates

Lipids and Their Functions in Biochemical Systems

Protein Structure and Function

Enzymes

Introduction to Molecular Genetics

Carbohydrate Metabolism

Aerobic Respiration and Energy Production

Fatty Acid Metabolism

Filters

Traces of H⁺ can catalyze both the formation of an ester and its hydrolysis.