Question 1

What is the IUPAC name of the straight chain dicarboxylic acid which contains seven carbon atoms?

Accepted Answer

A)  1,7-heptanedioic acid 
B)  heptanedioic acid 
C)  1,5-pentanedioic acid 
D)  pentanedioic acid 
A)  1,7-heptanedioic acid 
B)  heptanedioic acid 
C)  1,5-pentanedioic acid 
D)  pentanedioic acid

Question 2

What is the name of the simplest aromatic carboxylic acid?

Accepted Answer

A)  benzenoic acid 
B)  benzoic acid 
C)  benzylic acid 
D)  toluic acid 
A)  benzenoic acid 
B)  benzoic acid 
C)  benzylic acid 
D)  toluic acid

Question 3

Which of the following must be present in a carboxylic acid?

Accepted Answer

A)  a carbonyl group and a hydroxyl group bonded to different carbon atoms 
B)  a carbonyl group and a hydroxyl group bonded to the same carbon atom 
C)  two hydroxyl groups on the same carbon atom 
D)  two carbonyl groups on the same carbon atom 
A)  a carbonyl group and a hydroxyl group bonded to different carbon atoms 
B)  a carbonyl group and a hydroxyl group bonded to the same carbon atom 
C)  two hydroxyl groups on the same carbon atom 
D)  two carbonyl groups on the same carbon atom

Question 4

Which of the following acids is a component of the venom injected by stinging ants?

Accepted Answer

A)  butyric acid 
B)  acetic acid 
C)  formic acid 
D)  stearic acid 
A)  butyric acid 
B)  acetic acid 
C)  formic acid 
D)  stearic acid

Question 5

Which of the following 18 carbon fatty acids will have the highest melting point?

Accepted Answer

A)  oleic acid 
B)  linoleic acid 
C)  linolenic acid 
D)  stearic acid 
A)  oleic acid 
B)  linoleic acid 
C)  linolenic acid 
D)  stearic acid

Question 6

Which of the following is a major component of kidney stones?

Accepted Answer

A)  calcium glutarate 
B)  calcium malate 
C)  calcium oxalate 
D)  calcium succinate 
A)  calcium glutarate 
B)  calcium malate 
C)  calcium oxalate 
D)  calcium succinate

Question 7

What is the name of the compound produced by the reaction of benzoic acid with ammonia?

Accepted Answer

A)  ammonium benzide 
B)  ammonium benzoate 
C)  ammonia benzide 
D)  ammonia benzoate 
A)  ammonium benzide 
B)  ammonium benzoate 
C)  ammonia benzide 
D)  ammonia benzoate

Question 8

Which of the following acids is found in abundance in animal fats?

Accepted Answer

A)  arachidic acid 
B)  palmitic acid 
C)  stearic acid 
D)  all of these 
A)  arachidic acid 
B)  palmitic acid 
C)  stearic acid 
D)  all of these

Question 9

Which of the following compounds is not a member of the family known as ketone bodies?

Accepted Answer

A)    
B)    
C)    
D)  None, all are ketone bodies. 
A)    
B)    
C)    
D)  None, all are ketone bodies.

Question 10

In the Fischer esterification reaction, what catalyst is required?

Accepted Answer

A)  a strong acid 
B)  a strong base 
C)  either a or b 
D)  Neither a nor b, the reaction does not need a catalyst. 
A)  a strong acid 
B)  a strong base 
C)  either a or b 
D)  Neither a nor b, the reaction does not need a catalyst.

Question 11

Consider a certain carboxylic acid at physiological pH of about 7.4. Assume the following general reaction. HA(aq) + H2O(l) → H3O+(aq) + A-(aq)
What will happen to the ratio of the deprotonated to protonated form, respectively, if the pH of the solution drops to 6.2?

Accepted Answer

A)  It will decrease. 
B)  It will increase. 
C)  It will remain constant. 
D)  It will decrease then increase since it is a buffer. 
A)  It will decrease. 
B)  It will increase. 
C)  It will remain constant. 
D)  It will decrease then increase since it is a buffer.

Question 12

Which of the following acids is used in the synthesis of the polymer nylon-66?

Accepted Answer

A)  adipic acid 
B)  palmitic acid 
C)  stearic acid 
D)  none of these 
A)  adipic acid 
B)  palmitic acid 
C)  stearic acid 
D)  none of these

Question 13

Which of the following unsaturated acids has the fewest double bonds?

Accepted Answer

A)  arachidonic acid 
B)  linoleic acid 
C)  linolenic acid 
D)  oleic acid 
A)  arachidonic acid 
B)  linoleic acid 
C)  linolenic acid 
D)  oleic acid

Question 14

Which of the following is not a real compound?

Accepted Answer

A)  1-hydroxybutanoic acid 
B)  2-hydroxybutanoic acid 
C)  3-hydroxybutanoic acid 
D)  None, they are all real compounds. 
A)  1-hydroxybutanoic acid 
B)  2-hydroxybutanoic acid 
C)  3-hydroxybutanoic acid 
D)  None, they are all real compounds.

Question 15

What is the IUPAC name of the following compound?

Accepted Answer

A)  2-hydroxybuatnoic acid 
B)  3-hydroxybutanoic acid 
C)  β-hydroxybutanoic acid 
D)  γ-hydroxybutanoic acid 
A)  2-hydroxybuatnoic acid 
B)  3-hydroxybutanoic acid 
C)  β-hydroxybutanoic acid 
D)  γ-hydroxybutanoic acid

Question 16

What is the IUPAC name for the following compound?

Accepted Answer

A)  3-amino-2-hydroxybenzoic acid 
B)  5-amino-2-hydroxybenzoic acid 
C)  3-carboxy-4-hydroxyaniline 
D)  3-amino-6-hydroxybenzoic acid 
A)  3-amino-2-hydroxybenzoic acid 
B)  5-amino-2-hydroxybenzoic acid 
C)  3-carboxy-4-hydroxyaniline 
D)  3-amino-6-hydroxybenzoic acid

Question 17

Carboxylic acids do not form hydrogen bonds with which of the following classes of compounds?

Accepted Answer

A)  alcohols 
B)  ethers 
C)  alkanes 
D)  None, carboxylic acids form hydrogen bonds with all of these. 
A)  alcohols 
B)  ethers 
C)  alkanes 
D)  None, carboxylic acids form hydrogen bonds with all of these.

Question 18

Why are the melting points of cis-unsaturated fatty acids lower than those of trans-unsaturated fatty acids?

Accepted Answer

A)  The cis-unsaturated fatty acid chains are shorter. 
B)  The trans-unsaturated fatty acid chains pack together in close parallel alignment. 
C)  The cis-unsaturated fatty acid chains have stronger London dispersion forces. 
D)  All three factors (a)-(c) are important. 
A)  The cis-unsaturated fatty acid chains are shorter. 
B)  The trans-unsaturated fatty acid chains pack together in close parallel alignment. 
C)  The cis-unsaturated fatty acid chains have stronger London dispersion forces. 
D)  All three factors (a)-(c) are important.

Question 19

Saponification is an example of which type of reaction?

Accepted Answer

A)  esterification 
B)  ester hydrolysis 
C)  reduction 
D)  oxidation 
A)  esterification 
B)  ester hydrolysis 
C)  reduction 
D)  oxidation

Question 20

Which of the following can be used as a fungal growth inhibitor?

Accepted Answer

A)  calcium propanoater 
B)  sodium benzoate 
C)  both a and b 
D)  neither a nor b 
A)  calcium propanoater 
B)  sodium benzoate 
C)  both a and b 
D)  neither a nor b

Exam 18: Carboxylic Acids

What is the IUPAC name of the straight chain dicarboxylic acid which contains seven carbon atoms?

What is the name of the simplest aromatic carboxylic acid?

Which of the following must be present in a carboxylic acid?

Which of the following acids is a component of the venom injected by stinging ants?

Which of the following 18 carbon fatty acids will have the highest melting point?

Which of the following is a major component of kidney stones?

What is the name of the compound produced by the reaction of benzoic acid with ammonia?

Which of the following acids is found in abundance in animal fats?

Which of the following compounds is not a member of the family known as ketone bodies?

In the Fischer esterification reaction, what catalyst is required?

Consider a certain carboxylic acid at physiological pH of about 7.4. Assume the following general reaction. HA(aq) + H2O(l) → H3O+(aq) + A-(aq) What will happen to the ratio of the deprotonated to protonated form, respectively, if the pH of the solution drops to 6.2?

Which of the following acids is used in the synthesis of the polymer nylon-66?

Which of the following unsaturated acids has the fewest double bonds?

Which of the following is not a real compound?

What is the IUPAC name of the following compound?

What is the IUPAC name for the following compound?

Carboxylic acids do not form hydrogen bonds with which of the following classes of compounds?

Why are the melting points of cis-unsaturated fatty acids lower than those of trans-unsaturated fatty acids?

Saponification is an example of which type of reaction?

Which of the following can be used as a fungal growth inhibitor?

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Consider a certain carboxylic acid at physiological pH of about 7.4. Assume the following general reaction. HA(aq) + H₂O(l) → H₃O⁺(aq) + A^-(aq) What will happen to the ratio of the deprotonated to protonated form, respectively, if the pH of the solution drops to 6.2?