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MCAT Organic Chemistry
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Subjects
:
mcat
,
science
Instructions:
Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Methyl are 60 degrees apart. kinda stable
hydroboration
amines
protic solvent
gauche conformation
2. Name for ethanal
geminal
vicinal
acetaldehyde
ethers
3. Carbon double bonded to an oxygen
isomer
carbonyl
saturated hydrocarbon
protic solvent
4. Carbon carbon triple bonds. Suffix-yne.
relative configuration
nonbonded strain
disproportionation
Alkyne
5. N - l - ml - ms
meso compound
weak bases
electrophilic addition of HX
quantum numbers
6. Non mirror image of configurational isomers. cis and trans alkenes are them. possible when a molecule has two or more stereogenic centers that differ at some but not alll of the centers. they require multiple chiral centers.
cold potassium permanganate
Alkyne
diastereomers
covalent bond
7. Use the Greek root for the number of carbons followed by the ending - - ane
Alkane nomenclature
molecular orbital
conformational isomer
Haloalkane
8. Is bonded to only one other carbon atom
alkyne
molecular orbital
C3H8 + 5O2 = 3CO2 + 4H2O + heat
primary carbon
9. Diols with hydroxyl group on adjacent carbon
vicinal
optical activity
ring strain
hybridization
10. Steps of free radical substitution
initiation propagation termination
formaldehyde
saturated hydrocarbon
Alkane
11. Carbonyl located in middle or somewhere in chane. Named with One
markovnikov's rule
Combustion
ketone
vicinal
12. Spatial arrangement of the atoms or groups of a sterioisomer
carbonyl
chiral center
configuration
sp
13. Compounds with halogen
absolute configuration
Haloalkane
Alkene
protic solvent
14. Transfer of electrions from one atome to another
weak bases
markovnikov's rule
ionic bond
methylene
15. Diborane add to double bond. boron acts as lewis acid and attaches to less hindered carbon. hydride transferred to adjacent carbon. antimarkonikov - alcohol produced
hydroboration
2^n
ionic bond
alcohol
16. Always receive number one. contain carbonyl and OH group - very oxidized. highest priority functional group.
geminal
vicinal
carboxylic acid
Alkyne
17. E of double bond act as lewis base and react with hydrogen of hx. make carbocation intermediate. use markonikovs rule
electrophilic addition of HX
eclipsed conformation
hydroboration
halogen
18. Share molecular formula but have different chemical and physical properties
electrophilic addition of X2
gauche conformation
achiral
structural isomers
19. Kmno4
relative configuration
potassium permanganate
sigma bond
primary carbon
20. Common name for ethyne
disproportionation
Acetylene
C3H8 + 5O2 = 3CO2 + 4H2O + heat
diastereomers
21. Water can be added to alkenes under acidic conditions. make carbocation. ends with alcohol
electrophilic addition of H2O
hot - acidic potassium permanganate
primary carbon
relative configuration
22. In which one or morehydrogen atoms are replaced with a halogen atom. via free radical substitution
chiral
optical activity
ozonolysis
halogenation
23. Alkenes oxidzed with kmno4 - if made with cold - dilue - make OH on each side of double bond - diols or glycol in syn orientation
Vinyl
alkyne
lindlar's catalyst
cold potassium permanganate
24. Two hydroxyl groups
isomer
carbonyl
meso compound
diol
25. Chain of carbons connected by single bonds with hydrogen atoms attached.
Vinyl
primary carbon
Alkane
configuration
26. No double bonds. it has the maximum number of hydrogens.
angle strain
mcpba
saturated hydrocarbon
geometric isomers
27. One s and two p 120 degree apart
alkyne
conformational isomer
electrophilic addition of H2O
sp2
28. Monosubstituted ethylene
Vinyl
pyrolysis
oxidizing
alkyne
29. Nucleus lover. electron rich species that are attracked to charged atoms
nucleophile
nonbonded strain
vicinal
y- root - en -x-yne
30. A molecule with an internal plane of symmetry
meso compound
C3H8 + 5O2 = 3CO2 + 4H2O + heat
electrophilic addition of H2O
electrophile
31. Charged - need electrons
electrophile
optical activity
halogen
polymerization
32. Refers to the =CH2 group
methylene
specific rotation
ring strain
anti conformation
33. One s and three p orbitals
Haloalkane
sp3
not ignored
alkyne
34. Same molecular formula but different structure
geometric isomers
Alkyne
ozonolysis
isomer
35. Creation of long - high molecular weight polymer composed of repeating subunit called monomers. occur through a radical mechanism.
carboxylic acid
polymerization
allyl
gauche conformation
36. Results when cyclic molecules must assume conformations that have eclipsed interactions
nonbonded strain
cold potassium permanganate
torsional strain
peroxycarboxylic acid
37. Combustion reaction occurs through a radical process
basicity
primary carbon
C3H8 + 5O2 = 3CO2 + 4H2O + heat
angle strain
38. Nonsuperimposable mirror image of chiral objects - a specific steroisomer.
enantiomer
cold potassium permanganate
sp
weak bases
39. O3
markovnikov's rule
sigma bond
ozonolysis
conformational isomer
40. A radical transfers a hydrogen atom to another radical and makes an alkane and alkene
ozonolysis
Alkene
achiral
disproportionation
41. A = observed rotation / concentration * length
aldehyde
specific rotation
nucleophile
oxidizing
42. Not solvated
oxidation
weak bases
absolute configuration
aprotic solvent
43. Formed by mixing different types of orbitals
ozonolysis
electrophile
hybridization
quantum numbers
44. Two p orbital form pi and third p orbital combine with s to make two sp hybrid. 180 degree apart
Alkene
Acetylene
not ignored
sp
45. Iso - neo - cyclo
pyrolysis
gauche conformation
not ignored
methylene
46. Name for propanal
geminal
2^n
cold potassium permanganate
propionaldehyde
47. Rotations cancel each other out therefore no optical activity
covalent bond
racemic mixture
electrophilic addition of HX
lindlar's catalyst
48. Reducing an alkene by adding molecular hydrogen to double bond with aid of metal catalyst. e.g. pt - pd - ni. takes place on surface of metal so it does syn addition
sp3
catalytic hydrogenation
hot - acidic potassium permanganate
optical activity
49. Solvents with protons in solution - e.g. water or alcohol. large atoms tend to be better nucleophiles in here because they can shed the solvating protons around them and are more polarizable
ozonolysis
lindlar's catalyst
optical activity
protic solvent
50. If a compound is able to rotate plane polarized light.
protic solvent
halogen
diol
optical activity
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