Self Quiz Answers
Home Up Self Quiz Self Quiz Answers Lesson 4 Review Lesson 4 Review Answers Nomenclature Practice Answers

 

Self Quiz Answers

 

1. Name the following:

 

a.

             O  
|   |       || 
- C - C - O - C - H
|   |          		ethyl formate
or
ethyl methanoate
 

b.

|   |       |   |
- C - C - O - C - C -
|   |       |   |
-C-       
|        		ethyl isopropyl ether
 

c.

O
|   |   ||       |
-C - C - C - O - C -
|   |           | 		methyl propanoate
 

d.

  |
O      -C-    
||    |   |   | 
C - C - C - C -
/    |   |   |   
HO                    		3-methylbutanoic acid

 

2. Draw structural formulas for the following:

a. formic acid   O
   ||
H-O-C-H
b. methyl acetate O  
| ||   |
-C-C-O-C-
|     |
c. methyl pentyl ether |   | | | | |
-C-O-C-C-C-C-C-
|   | | | | |

 

3. Classify each of the compounds in questions 1 and 2:

1-a.              O  
|   |       || 
- C - C - O - C - H
|   |          		ester
1-b. |   |       |   |
- C - C - O - C - C -
|   |       |   |
-C-       
|        		ether
1-c. O
|   |   ||       |
-C - C - C - O - C -
|   |           | 		ester
1-d.   |
O      -C-    
||    |   |   | 
C - C - C - C -
/    |   |   |   
HO                    		carboxylic acid
2-a.
formic acid
 carboxylic acid
2-b.
methyl acetate
 ester
2-c.
methyl pentyl ether
 ether

 

4. Identify the following as soaps, phosphate esters, or fats:

a. OH   
|    
O-P-OCH2CH3
|    
O    
|    
CH3    		phosphate ester
b. O
||
C15H32C-ONa 		soap
c.

        O
        ||
  H2C-O-C-C11H23
    |   
    |   O
    |   ||
   HC-O-C-C11H23
    |            
    |   O
    |   ||
  H2C-O-C-C11H23

fat

 

5. Write an equation showing how:

a. methyl ethyl ether can be prepared from methanol and ethanol.

     dehydration
CH3-O-H    +   H-O-CH2-CH3   ¾¾¾¾¾¾¾®    CH3-O-CH2-CH3   +  H2O
  H2SO4, heat

b. ethyl formate can be prepared from an acid and an alcohol.

O 
|| 
H-C-OH
 +   H-O-CH2-CH3 dehydration
¾¾¾¾¾¾¾®
H+, heat		 O             
||              
H-C-O-CH2-CH3
+    H2O

c. propanoic acid can be prepared from an alcohol.

CH3-CH2-CH2-OH oxidation
¾¾¾¾¾¾¾¾¾®
K2Cr2O7, H2SO4		             O
          //
CH3-CH2-C     
           \
                 OH

d. methyl acetate can be prepared from methanol and ethene.

This involves multiple steps: use ethene (via ethanol) to make acetic acid, then combine with methanol to make methyl acetate.

CH2=CH2 +    H2O addition
¾¾¾¾¾®		 CH3CH2OH oxidation
¾¾¾¾¾®
CH3COOH
  O
   ||
CH3-C-OH
 +   H-O-CH3 dehydration
¾¾¾¾¾¾¾®
H+, heat		 O    
||    
CH3-C-O-CH3
+    H2O

 

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E-mail instructor: Sue Eggling

Clackamas Community College
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