Question 1

Consider the structures given below.  Fill in the blanks with appropriate letter (A, B, C, D, E, F).
-Structure _________________________ would undergo oxidative decarboxylation.

Accepted Answer

D

Question 2

Which of the following is characteristic of the structure of tryptamines?

Accepted Answer

A)   aromatic
B)   alkene
C)   secondary amine
D)   all of the above D

Question 3

Consider the structures given below.  Fill in the blanks with appropriate letter (A, B, C, D, E, F).
-Structure ___________________ would exist as a positive ion at pH 4.

Accepted Answer

B
D

Question 4

Which of the following is the molecular formula for the salt of the magnesium ion and the propanoate anion?

Accepted Answer

A)   Mg(C3H5O2) 2
B)   Mg2C3H5O2
C)   Mg(C3H6O2) 2
D)   MgC3H5O2

Question 5

Which of the following is true of both a decarboxylation reaction and an oxidative decarboxylation reaction?

Accepted Answer

A)   thiol reactant
B)   production of CO2
C)   presence of coenzyme
D)   molecular location of the ketone group

Question 6

Which of the following would not be soluble in water?

Accepted Answer

A)   potassium nonanoate
B)   sodium nonanoate
C)   nonanoic acid
D)   All would exhibit about the same solubility in water.

Question 7

The formula for cyclopentylamine is:

Accepted Answer

A) True 
 B)False

Question 8

Using structural formulas, write the equation for the ionization of p-cresol (show below) in water.

Accepted Answer

The answer of Using structural formulas, write the equation for...

Question 9

In the synthesis of terpenes, an important class of biomolecules called lipids, mevalonyl phosphate is an intermediate and is shown below.  At physiological pH this lipid intermediate would exist as:

Accepted Answer

A)   
B)   
C)   
D)   
E)   a mixture of a and bF)  a mixture of c and dG)  a mixture of a, b, c, and d

Question 10

One of the necessary components for fatty acid synthesis is a complex of malonic acid (shown below) and CoA.  The structure of this complex at physiological pH would be:

Accepted Answer

A) True 
 B)False

Question 11

The water solubility of heptanoic acid is less than that of potassium heptanoate.

Accepted Answer

A) True 
 B)False

Question 12

Consider the following nitrogen containing compounds.  Fill in the blanks with the appropriate letter (A, B, C, D).
-Structure________________ would be the form present in a pH 2 solution.

Accepted Answer

The answer of Consider the following nitrogen containing compounds. ...

Question 13

Certain amines called tryptamines, have an effect on the central nervous system and share a common structural feature.

Accepted Answer

A) True 
 B)False

Question 14

Consider the structures given below.  Fill in the blanks with appropriate letter (A, B, C, D, E, F).
-Structure ___________________ would exist as a negative ion at pH 9.

Accepted Answer

The answer of Consider the structures given below.  Fill...

Question 15

When dimethylamine reacts with butanoic acid, which of the following is a product of the reaction?

Accepted Answer

A)   
B)   
C)   
D)   
E)   both a and cF)  both b and cG)  both b and d

Question 16

Serotonin is classified as a tryptamine.

Accepted Answer

A) True 
 B)False

Question 17

The following illustrates an amine acting as hydrogen bond donor with water.

Accepted Answer

A) True 
 B)False

Question 18

The following compounds are constitutional isomers. Which can function as only a hydrogen bond acceptor?

Accepted Answer

A)   
B)   
C)   
D)   All can only be hydrogen bond acceptors.

Question 19

Imitrexwas developed in the late 1980's and is used in the treatment of migraine. The active ingredient is shown below.  The substance would be classified as a(n):

Accepted Answer

A)   phenethylamine
B)   tryptamine
C)   alkaloid
D)   a and c
E)   b and c

Question 20

When a amine dissolves in water, the pH is

Accepted Answer

A)   greater than 7.
B)   less than 7.
C)   neutral at about 7.

Exam 12: Organic Acids and Bases

Consider the structures given below. Fill in the blanks with appropriate letter (A, B, C, D, E, F). -Structure _________________________ would undergo oxidative decarboxylation.

Which of the following is characteristic of the structure of tryptamines?

Consider the structures given below. Fill in the blanks with appropriate letter (A, B, C, D, E, F). -Structure ___________________ would exist as a positive ion at pH 4.

Which of the following is the molecular formula for the salt of the magnesium ion and the propanoate anion?

Which of the following is true of both a decarboxylation reaction and an oxidative decarboxylation reaction?

Which of the following would not be soluble in water?

The formula for cyclopentylamine is:

Using structural formulas, write the equation for the ionization of p-cresol (show below) in water.

In the synthesis of terpenes, an important class of biomolecules called lipids, mevalonyl phosphate is an intermediate and is shown below. At physiological pH this lipid intermediate would exist as:

One of the necessary components for fatty acid synthesis is a complex of malonic acid (shown below) and CoA. The structure of this complex at physiological pH would be:

The water solubility of heptanoic acid is less than that of potassium heptanoate.

Consider the following nitrogen containing compounds. Fill in the blanks with the appropriate letter (A, B, C, D). -Structure________________ would be the form present in a pH 2 solution.

Certain amines called tryptamines, have an effect on the central nervous system and share a common structural feature.

Consider the structures given below. Fill in the blanks with appropriate letter (A, B, C, D, E, F). -Structure ___________________ would exist as a negative ion at pH 9.

When dimethylamine reacts with butanoic acid, which of the following is a product of the reaction?

Serotonin is classified as a tryptamine.

The following illustrates an amine acting as hydrogen bond donor with water.

The following compounds are constitutional isomers. Which can function as only a hydrogen bond acceptor?

Imitrexwas developed in the late 1980's and is used in the treatment of migraine. The active ingredient is shown below. The substance would be classified as a(n) :

When a amine dissolves in water, the pH is