Isomers
Carbonyl Chemistry I
Carbonyl Chemistry II
Chromatography
Spectroscopy
100
Rank the following compounds in order of increasing acidity.
A. II < IV < III < I
B. I < III < IV < II
C. I < IV < III < II
D. I < III < II < IV
B
100
An acetal can be prepared from the reaction of:
A. an alkane and an aldehyde.
B. a carboxylic acid and alcohol.
C. an aldehyde and a ketone.
D. a ketone and an alcohol.
D
100
What is the major product of the reaction above?
A.
B.
C.
D.
A. Product D
B. Product C
C. Product A
D. Product B
B
100
What type of chromatography separates proteins and peptide fragments based on size?
Multiple choices may apply.
A. Size exclusion chromatography
B. Thin Layer chromatography and Column chromatography
C. HPLC
D. Ion exchange chromatography
E. Affinity chromatography
F. Gas chromatography
A
100
Fill in the blanks for the following statements:
1. If an object absorbs BLUE , then it emits
2. If an object absorbs, then it emits GREEN
3. If an object absorbs YELLOW , then it emits
4. If an object absorbs, then it emits ORANGE
5. If an object absorbs RED , then it emits
6. If an object absorbs, then it emits VIOLET
1. If an object absorbs BLUE , then it emits
2. If an object absorbs RED, then it emits GREEN
3. If an object absorbs YELLOW , then it emits VIOLET
4. If an object absorbs BLUE, then it emits ORANGE
5. If an object absorbs RED , then it emits GREEN
6. If an object absorbs YELLOW, then it emits VIOLET
200
Which of the following is the IUPAC name for this compound?
A. 5-Bromo-3-methylpentan-2-ol
B. 3-Methyl-1-bromopentan-2-ol
C. 3-Methyl-5-bromopentan-2-ol
D. 1-Bromo-3-methylpentan-4-ol
A
200
Which one of the following molecules will most easily undergo an SN2 reaction?
A. 
B. CH3I
C. 
D. CH3F
B
200
What is the major product of the reaction above?
A.
B.
C.
D.
A. Product B
B. Product A
C. Product D
D. Product C
A
200
What type of chromatography separates proteins and peptide fragments based on size?
Multiple choices may apply.
A. Size exclusion chromatography
B. Thin Layer chromatography and Column chromatography
C. HPLC
D. Ion exchange chromatography
E. Affinity chromatography
F. Gas chromatography
D
200
Match the themes of spectroscopy with their determinants
A. Mass Spectrometry
B. UV-Vis Spectroscopy
C. Infrared Spectroscopy
D. H NMR Spectroscopy
1.
2. Cause bonds to vibrate at different frequencies for different functional groups
3. Used to determine molecular weight
4. Indicate the presence of a pi system in a sp2 hybridized atom that can absorb colors
A. Mass Spectrometry = Used to determine molecular weight
B. UV-Vis Spectroscopy = Indicate the presence of a pi system in a sp2 hybridized atom that can absorb colors
C. Infrared Spectroscopy = Cause bonds to vibrate at different frequencies for different functional groups
D. H NMR Spectroscopy =
300
The relationship between the two molecules
is best described as:
A. Structural isomers
B. Enantiomers
C. Diastereomers
D. Epimers
B
300
Which of the following best describes the product of an SN1 reaction in which the leaving group is on the only chiral carbon atom in the molecule?
A. Racemic mixture
B. Retention of stereochemistry
C. Double-inversion of stereochemistry
D. Inversion of stereochemistry
A
300
Question 18
What is the major product of the reaction above?
A.
B.
C.
D.
A. Molecule D
B. Molecule B
C. Molecule C
D. Molecule A
D
300
What type of chromatography separates proteins and peptide fragments based on size?
Multiple choices may apply.
A. Size exclusion chromatography
B. Thin Layer chromatography and Column chromatography
C. HPLC
D. Ion exchange chromatography
E. Affinity chromatography
F. Gas chromatography
B and C
300
How many signals are in the H NMR spectrum, of the compound below?
A. Four
B. Two
C. Three
D. Six
??
400
Optically-active compounds that rotate plane-polarized light in the clockwise direction are designated:
A. dextrorotatory.
B. levorotatory.
C. (S).
D. (R).
A
400
Which of the following is NOT a feature of SN2 reactions?
A. Bimolecular kinetics
B. A pentacoordinated transition state
C. A carbocation intermediate
D. A single-step mechanism
C
400
What is the major product of the reaction above?
A.
B.
C.
D.
A. Molecule D
B. Molecule A
C. Molecule C
D. Molecule B
C
400
What type of chromatography separates proteins and peptide fragments based on size?
Multiple choices may apply.
A. Size exclusion chromatography
B. Thin Layer chromatography and Column chromatography
C. HPLC
D. Ion exchange chromatography
E. Affinity chromatography
F. Gas chromatography
F
400
Which of the following molecules will have an infrared stretch nearest to 2250 cm-1
A. (CH3)2CO
B. CH3CN
C. H2C=CH2
D. CH2OH
??
500
Which of the following is a meso compound?
A.
B.
C.
D.
C
500
Unlike aldehydes and ketones, which undergo simple nucleophilic addition reactions, acid halides tend to undergo addition-elimination reactions. This is best explained by:
A. their less sterically-congested environment.
B. their higher polarity.
C. their higher electrophilicity.
D. the good leaving-group ability of the halide ion
D
500
Question 22
What is the major product of the reaction above?
A.
B.
C.
D.
A. Molecule D
B. Molecule B
C. Molecule A
D. Molecule C
A
500
What type of chromatography separates proteins and peptide fragments based on size?
Multiple choices may apply.
A. Size exclusion chromatography
B. Thin Layer chromatography and Column chromatography
C. HPLC
D. Ion exchange chromatography
E. Affinity chromatography
F. Gas chromatography
E
500
TLC is used to separate cyclohexanone from phenol. Which of the following would be expected?
A. The Rf value of phenol would be similar than the Rf value of cyclohexanone
B. TLC cannot B.E. used to separate these two molecules
C. The Rf value of cyclohexanone would be smaller than the Rf value of phenol
D. The Rf values would be the same because the molecules both have ring structures
???