Download Exam 2-07

Name: ____________________________________________
CHEMISTRY 1152
SUMMER SESSION 2007
EXAM #2
This exam is thirty three questions long. Please read through all of the questions and ask
about anything you do not understand. You will have one hour and 15 minutes to
complete this exam. Exams will be picked up at the end of the class period. No late
exams will be accepted.
CHEATING IS NOT ALLOWED. ANYONE CAUGHT CHEATING WILL BE SENT
TO THE JUDICARY BOARD FOR REVIEW.
The exam is worth 100 points. Each question is labeled with its exact point value. Be sure
to answer all of the questions on the exam.
Good Luck!
(24 points total -- 3 points each)
Give the correct chemical name for the following:
1.)
H3C
2.)
H
C
CH3
CH
CH3
OH
OH
3.)
4.)
CH3CH2-O-CH2CH2CH3
O
CH2CH3
5.)
6.)
O
CH3
H2
C
H2
C
C
OH
COOH
7.)
8.)
O
CH3
H2
C
C
CH3
O
C
H
O
CH3
O
(24 points total -- 3 Points each)
Draw the correct structural formula for each:
9.) 2-methyl-2-heptanol
10.) 3,5-dimethylcyclohexanol
11.) methyl phenyl ether
12.) butyl hexyl ether
13.) 2-ethylbutanoic acid
14.) 3-bromo-5-chlorooctanoic acid
15.) 2-bromopropyl ethanoate
16.) 2-methylpropyl methanoate
(30 points total -- 5 points each)
Predict the products of the following reactions:
17.)
+ O2
OH
18.)
acid
heat
OH
19.)
[o]
OH
20.) CH3OH + CH3CH2OH
O
21.) LiOH + HO
22.)
O
HO
+ CH3CH2OH
(22 points -- 2 points each)
23.) A phenol has on –OH group bonded to a(n)
a.) disubstituted carbon.
b.) trisubstituted carbon.
c.) singly substituted or unsubstituted carbon.
d.) aromatic carbon.
e.) tetrasubstituted carbon.
24.) Many of the fragrances of flowers and the flavors of fruits are due to
a.) amines
b.) amides
c.) ethers
d.) esters
e.) carboxylic acids
25.) When compared to sulfuric acid, how strong are carboxylic acids?
a.) just as strong
b.) stronger
c.) weaker
d.) not acidic at all
e.) they are not acids
26.) Which part of a soap is responsible for its ability to dissolve fats and oily dirt?
a.) the hydrophobic (nonpolar) end
b.) the carbonyl group.
c.) the hydrophilic (polar) end
d.) the ionized oxygen.
e.) the carboxylate.
27.) Unsaturated fatty acids have lower melting points than saturated fatty acids because
a.) the trans double bonds give them an irregular shape
b.) their molecules fit closely together
c.) they have more hydrogen atoms
d.) the cis double bonds give them an irregular shape
e.) they have fewer hydrogen atoms
28.) Which statement is NOT true?
a.) Lipids are found in cell membranes.
b.) Lipids are soluble in organic solvents.
c.) Lipids vary in composition.
d.) Oxidation of lipids provides half as much energy as oxidation of carbohydrates
e.) Some hormones are lipids.
29.) What type of bonds do alcohols form between individual molecules?
a.) oxygen bonds
b.) ionic bonds
c.) carbon bonds
d.) hydrogen bonds
e.) single bonds
30.) Waxes are lipids derived from
a.) a long chain alcohol and a long chain fatty acid
b.) glycerol and three fatty acids
c.) glycerol, fatty acids phosphate and an amino alcohol
d.) sphingosine, fatty acids, phosphate and an amino alcohol
e.) steroids and cholesterol
Fill in the blank with the correct type of reaction:
a.) hydration
b.) rancidity
c.) saponification
d..) hydrolysis
31.) Conversion of some cis double bonds to trans double bonds _________________
32.) Produced fatty acid salts __________________________________
33.) Produced short chain fatty acids ____________________________