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WorksheetsCHEM 2331 Final Exam UAA Session
Total questions: 25
Worksheet time: 12mins
How many types of chemically distinct hydrogens are in this molecule?
7
4
6
5
How many types of chemically distinct hydrogens are present in this molecule?
6
7
5
8
What heteroatom is most likely present in a compound with this mass spectrum?
Nitrogen
Chlorine
Bromine
Sulfur
A certain molecule has 5 nitrogen atoms. Which of the following numbers could NOT be its molar mass?
445 g/mol
339 g/mol
523 g/mol
438 g/mol
For addition reactions to conjugated dienes, the thermodynamic product corresponds to the less-substituted alkene.
TRUE
FALSE
This reaction is most likely to proceed by which mechanism?
SN1
E2
E1
SN2
CHALLENGE! What is the complex splitting pattern for Hydrogen b (Hb)?
doublet of a doublet of a triplet
triplet of a doublet
doublet of a doublet
triplet of a doublet
The following reaction is an example of:
acidification
saponification
alcoholysis
heterolysis
Which of the following solvents would NOT be appropriate for Step 1 of the reaction shown?
Acetone
DMF
Ethanol
THF
Select the most stable leaving group for the molecule shown.
Br−
Cl−
TsO−
H2N−
CHALLENGE! What is the major product for this reaction?
Select all the reversible nucleophiles.
MgBrCH3
NaOCH3
KOH
LiAlH4
TRUE or FALSE: OH− acts as a leaving group in an Aldol Condensation reaction.
TRUE
FALSE
TRUE or FALSE: A compound that is antiaromatic must be planar.
TRUE
FALSE
BONUS POINTS! Select the correct product for this Aldol Addition reaction.
What is the difference between Hydrogen and Deuterium?
Hydrogen has 1 proton, but Deuterium has none.
Hydrogen has 1 neutron, but Deuterium has none.
Deuterium has 1 electron, but Hydrogen has none.
Deuterium has 1 neutron, but Hydrogen has none.
Select the strongest nucleophile.
CH3O−
CH3NH−
CH3S−
CH3CH2 −
How many acetal groups are present in this molecule?
4
3
2
5
How many hemiacetal groups are present in this molecule?
4
3
2
5
By which mechanism does an epoxide open?
SN2
E1
SN1
E1
TRUE or FALSE: Acidity of a compound increases as the pKa number increases.
TRUE
FALSE
Select the term that correctly describes this molecule.
Nonaromatic
Antiaromatic
Aromatic
Something we haven't discussed
Select all the factors that could make the enol form of some molecules favored over the keto form.
Intramolecular hydrogen bonding
Aromaticity
Higher bond energy in enol
Lower bond energy in enol
CHALLENGE! Shown is the disaccharide lactose. Looking at the ring on the left, we can tell that this is the ________ form of lactose.
Cis, β
Trans, α
Cis, α
Cis, β
Which of these are recommended study strategies to do your best on the final exam?
Take short breaks while studying to reduce burnout
Review previous exams and homework
Study for the whole night before exam day
Focus most on topics that you find more difficult
