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Test your basic knowledge |
MCAT Organic Chemistry
Start Test
Study First
Subjects
:
mcat
,
science
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
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. 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.
diastereomers
racemic mixture
electrophilic addition
sp2
2. In presence of peroxide - oxygen or ultraviolet light. antimarkonikov because they want a stable free radical. therefore X ends up on least subsituted carbon
fischer projection
lindlar's catalyst
aldehyde
electrophilic addition of free radicals
3. Describes the exact spatial arrangement of groups of atoms independent of other molecules.
geminal
ring strain
initiation propagation termination
absolute configuration
4. Diols with hydroxyl group on adjacent carbon
specific rotation
vicinal
triple bond
covalent bond
5. How many stereoisomers can a molecule have with n chiral centers
enantiomer
geometric isomers
2^n
structural isomers
6. Functionality is specified by alkoxy- prefix. ROR
electrophilic addition of H2O
torsional strain
sp2
ethers
7. Same molecular formula but different structure
formaldehyde
isomer
Ignored
methylene
8. Configuration in relation to another chiral molecule. use it to determine if a molecule is an enantiomer - diastereomer - etc
Ignored
relative configuration
meso compound
formaldehyde
9. Electrons of pi bond are reactive and easily attacked by molecules that want e pair e.g. electrophiles.
allyl
electrophilic addition
ethers
optical activity
10. Y = position of double bond - x is position of triple bond - root is the prefix representing the length of the principal carbon chain
y- root - en -x-yne
alcohol
diol
Alkane nomenclature
11. Kmno4
potassium permanganate
Combustion
Alkane nomenclature
electrophilic addition of H2O
12. Alkenes oxidzed with kmno4 - if made with cold - dilue - make OH on each side of double bond - diols or glycol in syn orientation
C3H8 + 5O2 = 3CO2 + 4H2O + heat
Alkene
cold potassium permanganate
methylene
13. A molecule with an internal plane of symmetry
saturated hydrocarbon
2^n
meso compound
racemic mixture
14. Goal is to produce most stable carbocation
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15. Arise from angle strain - torsional strian and nonbonded strain
optical activity
sigma bond
alcohol
ring strain
16. Spatial arrangement of the atoms or groups of a sterioisomer
anti conformation
propionaldehyde
configuration
basicity
17. Common name for ethyne
not ignored
Acetylene
peroxycarboxylic acid
meso compound
18. Contain carbon carbon double bonds. Use same root of alkane but end with 'ene'
Alkene
potassium permanganate
ozonolysis
C3H8 + 5O2 = 3CO2 + 4H2O + heat
19. 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
weak bases
Haloalkane
protic solvent
polymerization
20. Hydrocarbon with one or more carbon carbon triple bond
electrophilic addition
vicinal
allyl
alkyne
21. One s and two p 120 degree apart
halogenation
ketone
fischer projection
sp2
22. Carbon carbon triple bonds. Suffix-yne.
covalent bond
Alkyne
cold potassium permanganate
ozonolysis
23. Transfer of electrions from one atome to another
Alkane nomenclature
cold potassium permanganate
hydroboration
ionic bond
24. Nonterminal alkenes are cleaved to form two molar equivalent of carvoxylic acid ..make keton
basicity
carbonyl
diol
hot - acidic potassium permanganate
25. Diol with hydroxyl group on same carbon
lindlar's catalyst
ionic bond
geminal
ketone
26. When two atomic orbitals combine. obtained mathematically by adding or subtracting wave functions. if sings are the same - make bonding - if different - less stable antibonding.
Acetylene
molecular orbital
nucleophile
lindlar's catalyst
27. Occur when a molecule is broken down by heat. used to reduce the avverage molecular weight of heavy oils. c - c - bonds are cleave dand make small chain alkyl radicals that recombine to form different alkanes
Alkane
pyrolysis
allyl
Alkane nomenclature
28. A = observed rotation / concentration * length
not ignored
meso compound
electrophilic addition of H2O
specific rotation
29. Di - tri - t - sec - n -
quantum numbers
acetaldehyde
electrophile
Ignored
30. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
geometric isomers
ketone
optical activity
oxidation
31. Carbonyl located in middle or somewhere in chane. Named with One
geometric isomers
saturated hydrocarbon
ketone
aldehyde
32. If a compound is able to rotate plane polarized light.
enantiomer
reducing
optical activity
triple bond
33. A sigma bond and two pi bonds
electrophilic addition of X2
torsional strain
triple bond
structural isomers
34. Use the Greek root for the number of carbons followed by the ending - - ane
stereoisomers
Alkane nomenclature
enantiomer
basicity
35. Ozonolysis under hot acidic kmO4 - e.g. H2O2 condition
anti conformation
pi bond
oxidizing
electrophilic addition
36. Nucleus lover. electron rich species that are attracked to charged atoms
reducing
structural isomers
nucleophile
ketone
37. When bond angles deviate from ideal values
specific rotation
nucleophile
angle strain
peroxycarboxylic acid
38. Cleaves double bond in half - it only oxidizes the carbon to an aldehyde under reducing conditions. if ozidizing make same product as KMNO4
absolute configuration
meso compound
ozonolysis
triple bond
39. Results when cyclic molecules must assume conformations that have eclipsed interactions
lindlar's catalyst
combustion - disproportionation - free - radical substitution - pyrolysis
torsional strain
Combustion
40. Rotations cancel each other out therefore no optical activity
aldehyde
configuration
protic solvent
racemic mixture
41. Reaction of alkane with oxygen to form carbon dioxide - water and heat.
sp3
Combustion
electrophilic addition of H2O
electrophilic addition
42. Water can be added to alkenes under acidic conditions. make carbocation. ends with alcohol
2^n
eclipsed conformation
electrophilic addition of H2O
chiral
43. Not solvated
angle strain
geometric isomers
oxidizing
aprotic solvent
44. Palladium or barium sulfate (BaSO4) with quinoline. occur on metal surface - make cis.
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45. Iso - neo - cyclo
y- root - en -x-yne
ozonolysis
not ignored
catalytic hydrogenation
46. What are the best leaving groups?
weak bases
hybridization
gauche conformation
methylene
47. Moleculse that have the opposite configuration at their one chiral center. or if multiple chiral centers - must have the opposite configuration at every one of their chiral centers to be enantiomers. identical physical properties and much of the same
halogen
chiral
diol
enantiomer
48. Carbonyl located at the end of the chain named by replacing al with e. e.g. butanal
configuration
quantum numbers
aldehyde
catalytic hydrogenation
49. A radical transfers a hydrogen atom to another radical and makes an alkane and alkene
not ignored
methylene
hot - acidic potassium permanganate
disproportionation
50. What is produced when o3 with lialh4 or nabh4
ozonolysis
eclipsed conformation
formaldehyde
alcohol