Deck 21: Organic Chemistry

Question 1

A unknown hydrocarbon undergoes the following general reaction. Which type of compound might X be?

A)alkane
B)cycloalkane
C)alkene
D)aromatic hydrocarbon
E)Any of the above is a possibility.

Answer 1

alkene

Question 2

Complete the following equation: C₃H₆ + Br₂ $\rightarrow$

A)C₃H₅Br + HBr
B)C₃H₆Br₂
C)C₃H₄Br₂ + 2 HBr
D)C₃H₆Br + Br
E)C₃H₆ does not react with bromine.

Answer 2

C₃H₆Br₂

Question 3

What is the name of the compound whose carbon skeleton is shown below?

A)dichloromonobromomethyl-2,2,4,6-hexane
B)4-bromo-2,2-dichloro-6-methylhexane
C)3-bromo-5,5-dichloro-1-methylhexane
D)4-bromo-6,6-dichloroheptane
E)4-bromo-2,2-dichloroheptane

Answer 3

4-bromo-2,2-dichloroheptane

Question 4

What is the IUPAC name of the molecule whose carbon skeleton is shown below?

A)nonane
B)2,3-dimethylheptane
C)1-ethyl-3,4-dimethylpentane
D)5-ethyl-2,3-dimethylpentane
E)2,3-dimethyl-5-ethylpentane

Question 5

What is the name of the following molecule?

A)1,4-dichlorohexatriene
B)1,4-dichlorocyclohexane
C)1,4-dichlorocyclohexene
D)p-dichlorobenzene
E)m-dichlorobenzene

Question 6

Consider the following structure.The central atom is carbon and the outer atoms are hydrogen. If one of the outer atoms was removed,the resulting structure would have which of the following names?

A)methane
B)methyl
C)cyclomethyl
D)ethyl
E)ethane

Question 7

What is the IUPAC name of the following molecule?

A)5-methyl-2-hexene
B)2-methyl-4-hexene
C)5-methyl-2-hexyne
D)2-methyl-4-hexyne
E)2-methyl-4,5-hexyne

Question 8

Which of the following compounds cannot have cis-trans isomers?
(i)H₂C = CCl₂
(ii)H₂C = CCH₃Cl
(iii)H₃CClC = CCH₃Cl

A)i only
B)ii only
C)iii only
D)both i and ii
E)All have cis-trans isomers

Question 9

Match each molecule below with its correct classification:

A)alkane alkene alkyne
B)alkane alkyne alkene
C)alkene alkane alkyne
D)alkene alkyne alkane
E)alkyne alkene alkane

Question 10

What is the product of the hydrogenation of trans-2-pentene?

A)isopentane
B)neopentane
C)cis-2-pentane
D)trans-2-pentane
E)n-pentane

Question 11

What is the name of the compound whose skeleton structure (hydrogens at end of bonds)is shown below?

A)trans-2-butene
B)cis-2-butene
C)1-butene
D)trans-3-butene
E)cis-3-butene

Question 12

Which of the following would be classified as organic?
(i)HCOOH
(ii)CO₃^2-
(iii)CN^-
(iv)CH₄
(v)CH₃OH

A)ii and iii
B)iv and v
C)i,iv,and v
D)i,ii,and iii
E)All are organic substances.

Question 13

Consider the following basic structure. This structure is characteristic of all the carbon atoms found in which of the following classifications of hydrocarbons?

A)alkanes
B)cycloalkanes
C)alkenes
D)alkynes
E)both a and b

Question 14

Which of the following compounds are classified as alkenes? Assume that none of the compounds listed is a cycloalkane.
(i)C₅H₁₀
(ii)C₇H₁₆
(iii)C₄H₈
(iv)C₁₀H₂₂
(v)CH₄

A)i and iii
B)ii and iv
C)ii,iv,and v
D)iii,iv,and v
E)All are alkenes

Question 15

What are the IUPAC and common names for the alkene with the molecular formula C₂H₄?
IUPAC name Common name

A)acetylene ethyne
B)ethyne acetylene
C)ethylene ethene
D)ethene ethylene
E)ethyne ethene

Question 16

What is the name of CH₃CH₂CH₂CH₂CH₃?

A)pentrane
B)qunitane
C)pentacarbonduodecahydrogen
D)butane
E)pentane

Question 17

What is the name of the following molecule:

A)1-chlorohexatriene
B)1-chlorocyclohexane
C)chlorocyclohexane
D)chlorocyclohexene
E)chlorobenzene

Question 18

What is the name of the compound whose structural diagram is shown below?

A)sq-butane
B)neobutane
C)cyclobutane
D)n-butane
E)isobutane

Question 19

Which of the following compounds is/are not classified as hydrocarbons?
(i)C₁₀H₂₂
(ii)CH₃CH₂CH₂CH₃
(iii)CH₃CH₂OH
(iv)CH₂O

A)i and ii
B)iii and iv
C)ii,iii,and iv
D)All are hydrocarbons
E)None is a hydrocarbon

Question 20

A certain compound is a gas at room temperature and undergoes only substitution reactions.Which of the following is most likely to be this compound?

A)C₄H₁₀
B)C₆H₁₀
C)C₇H₁₄
D)C₉H₁₈
E)Any of is a possibility

Question 21

Which of the following compounds is/are (an)ester(s)?
(i)CH₃-COOH
(ii)CH₃-COO-CH₃
(iii)CH₃-OH
(iv)CH₃-O-CH₃
(v)CH₃-NH₂

A)i only
B)ii only
C)iv only
D)i,ii,and iii
E)i,iii,and v

Question 22

What is the name of the following?

A)ethyl formanate
B)dimethyl ether
C)dimethyl ester
D)methyl acetate
E)propanoic acid

Question 23

Which of the following compounds is/are (an)aldehyde(s)?
(i)CH₃-OH
(ii)CH₃-CO-CH₃
(iii)CH₃-O-CH₃
(iv)CH₃-CHO
(v)CH₃-COO-CH₃

A)ii only
B)iii only
C)iv only
D)i and iv
E)ii,iii,and v

Question 24

Which of the following is the product of the dehydration reaction (140°C,continuous addition of ethanol)of two molecules of ethanol? One water molecule and one molecule of...

A)methyl ethyl ketone
B)methyl acetate
C)butane
D)butene (butylene)
E)diethyl ether

Question 25

What are the products of the reaction between acetic acid and ammonia?

A)Ammonium acetate and hydrogen
B)Methylamine and methanoic acid
C)Nitroacetic acid and hydrogen
D)Dimethylamine and water
E)Acetamide and water

Question 26

Which of the following compounds is/are (a)carboxylic acid(s)?
(i)CH₃-COOH
(ii)CH₃-COO-CH₃
(iii)CH₃-OH
(iv)CH₃-O-CH₃
(v)CH₃-NH₂

A)i only
B)ii only
C)iv only
D)i,ii,and iii
E)i,iii,and v

Question 27

Which of the following compounds is/are (an)amine(s)?
(i)CH₃-NH₂
(ii)(CH₃)₂-NH
(iii)(CH₃)₃-N
(iv)CH₃-CO-NH₂
(v)CH₃(CH₂)₂-CO-NH₂

A)i only
B)iv only
C)iv and v
D)i,ii,and iii
E)All are amines

Question 28

What is the name of the following?

A)dihydrogennitromethyl
B)formanamide
C)methylamine
D)primaryamine
E)methyl ammonia

Question 29

Which of the following compounds are alcohols?
(i)CH₃-CO-CH₃
(ii)CH₃CH₂-OH
(iii)C₂H₅-O-C₂H₅
(iv)CH₃(CH₂)₅-OH
(v)CH₃-CH₃

A)i and iii
B)ii and iv
C)i,ii,and iii
D)i,ii,iii,and iv
E)All are alcohols

Question 30

Which of the following compounds is/are (an)ether(s)?
(i)CH₃-CO-CH₃
(ii)CH₃CH₂-OH
(iii)C₂H₅-O-C₂H₅
(iv)CH₃(CH₂)₅-OH
(v)CH₃-CH₃

A)i only
B)ii only
C)iii only
D)ii and iv
E)i,ii,iii,and iv

Question 31

Which of the following compounds is/are (an)amide(s)?
(i)CH₃-NH₂
(ii)(CH₃)₂-NH
(iii)(CH₃)₃-N
(iv)CH₃-CO-NH₂
(v)CH₃(CH₂)₂-CO-NH₂

A)i only
B)iv only
C)iv and v
D)i,ii,and iii
E)All are amides

Question 32

What is the name of the following?

A)methanone
B)methyl carbonyl
C)acetone
D)formaldehyde
E)acetaldehyde

Question 33

What are the reactants in the commercial preparation of acetaldehyde,CH₃CHO?

A)A secondary alcohol and oxygen
B)A primary alcohol and oxygen
C)An aldehyde and oxygen
D)Acetylene and water
E)A ketone and hydrogen

Question 34

What is the IUPAC name of the following molecule:
CH₃CH₂-O-CH₂CH₃

A)2-oxybutanether
B)ethyl ethanoate
C)diethyl butanoate
D)diethyl alcohol
E)diethyl ether

Question 35

Which of the following compounds is/are (a)ketone(s)?
(i)CH₃-OH
(ii)CH₃-CO-CH₃
(iii)CH₃-O-CH₃
(iv)CH₃-CHO
(v)CH₃-COO-CH₃

A)ii only
B)ii,iii,and v
C)ii,iii,iv,and v
D)i,ii,iii,and iv
E)All are ketones

Question 36

What is the name of the reaction between an acid and an alcohol?

A)Protonization
B)Isomerization
C)Acidification
D)Oxidation
E)Esterification

Question 37

Which of the following alcohols is most soluble in water?

A)CH₃CH₂OH
B)CH₃(CH₂)₃OH
C)CH₃(CH₂)₅OH
D)CH₃(CH₂)₇OH
E)CH₃(CH₂)₉OH

Question 38

What is the product of the reaction between benzene and Cl₂,with FeCl₃ as a catalyst?

A)chlorobenzene + HCl
B)dichlorohexane
C)chlorohexane + HCl
D)dichlorohexene
E)dichlorohexene + HCl

Question 39

What is the IUPAC name of the following molecule:

A)3-butanol
B)2-butanol
C)1-methyl-1-propanol
D)3-methyl-3-propanol
E)isobutyl alcohol

Question 40

Which of the following is the best classification for the molecule shown below?

A)Primary amine
B)Secondary amine
C)Tertiary amine
D)Amino acid
E)Protein

Question 41

What types of reactants are necessary to form a polymer chain by repeated condensation reactions?

A)A carboxylic acid and an ether
B)A carboxylic acid and an ester
C)A ketone and an ether
D)A ketone and an ester
E)A dicarboxylic acid and a dialcohol

Question 42

Which of the following statements is/are incorrect?
(i)Nylon is an example of a step-growth polymer
(ii)The most effective way of making a polymer with mechanical strength is to use a dialcohol that gives linear chains
(iii)A cross-linked polyester will have high mechanical strength

A)i only
B)ii only
C)iii only
D)i and ii
E)i and iii

Question 43

Which of the following is the best definition of the term polymer?

A)A molecule consisting of two or more mer functional groups
B)A chemical compound formed by bonding two or more monomers
C)A chemical compound formed from the reaction of two or more alkanes
D)A molecule that has a regularly repeating double bonded carbon group
E)A molecule that has a regularly repeating benzene bonded to the main carbon chain

Question 44

What functional group is necessarily present in the monomers from which chain-growth polymers are formed?

A)Carboxylic acid
B)Ether
C)Ketone
D)Alkene
E)Alcohol

Question 45

Consider the segment of a polymer shown below. Which of the following correctly describes the reaction producing this polymer?

A)The reaction involves condensation.
B)The product is a copolymer.
C)The monomer is an halogenated alkene.
D)The reaction occurs by a step-growth mechanism.
E)All of these correctly characterize the reaction.