Deck 24: Organic Chemistry

Question 1

The alkane with six carbon atoms is called

A) butane.
B) hexane.
C) heptane.
D) butene.
E) none of these.

Answer 1

hexane.

Question 2

Unsaturated hydrocarbons

A) contain at least one double or triple carbon-carbon bond.
B) contain at least one element other than hydrogen and carbon.
C) contain the maximum number of hydrogens that can bond with the carbon atoms present.
D) cannot form structural isomers.
E) cannot undergo addition reactions.

Answer 2

contain at least one double or triple carbon-carbon bond.

Question 3

Alkanes have the general formula

A) C_nH_2n-4.
B) C_nH_2n-2.
C) C_nH_2n.
D) C_nH_2n+2.
E) C_nH_2n+4.

Answer 3

C_nH_2n+2.

Question 4

Which of these pairs are geometric isomers

A) CH₃CH₂-O-CH₂CH₃ and CH₃CH₂CH₂CH₂OH
B)
C)
D)

Question 5

The two molecules represented below are examples of
CH₃-CH₂-O-CH₂CH₃ $~~~~~~~$ CH₃CH₂CH₂CH₂-OH

A) geometric isomers.
B) structural isomers.
C) optical isomers.
D) stereoisomers.
E) None of these.

Question 6

The formula CH₃CH₂CH₂CH=CH₂ represents

A) an alkane.
B) a cycloalkane.
C) an alkene.
D) an alkyne.
E) an aromatic compound.

Question 7

Alkynes have the general formula

A) C_nH_2n-4.
B) C_nH_2n-2.
C) C_nH_2n.
D) C_nH_2n+2.
E) C_nH_2n+4.

Question 8

The molecule CH₂ClCHClBr has how many chiral centers

A) 0
B) 1
C) 2
D) 3
E) 4

Question 9

Cycloalkanes have the general formula

A) C_nH_2n-4.
B) C_nH_2n-2.
C) C_nH_2n.
D) C_nH_2n+2.
E) C_nH_2n+4.

Question 10

Which of these molecules is unsaturated

A) CH₄
B) C₂H₆
C) C₄H₆
D) C₅H₁₂
E) C₆H₁₄

Question 11

The formula CH₃C $\equiv$ CCH₃ represents

A) an alkane.
B) a cycloalkane.
C) an alkene.
D) an alkyne.
E) an aromatic compound.

Question 12

Select the one molecule that is a saturated hydrocarbon.

A) C₂H₄
B) C₄H₈
C) C₄H₆
D) C₄H₁₀
E) C₄H₂

Question 13

Alkenes have the general formula

A) C_nH_2n-4.
B) C_nH_2n-2.
C) C_nH_2n.
D) C_nH_2n+2.
E) C_nH_2n+4.

Question 14

Which of these species is an aromatic compound

A) C₂H₂
B) C₆H₁₂
C) C₆H₄Br₂
D) C₅H₁₀
E) C₂H₄Br₂

Question 15

A particular structural isomer of C₆H₁₄ is shown below. Which of the following structures represents a different structural isomer of C₆H₁₄ than the one shown above

A)
B)
C)
D)

Question 16

How many structural isomers are there of C₄H₁₀

A) 4
B) 6
C) 2
D) 8
E) 10

Question 17

The molecule CHBr₂CHCl₂ has how many chiral centers

A) 0
B) 1
C) 2
D) 3
E) 4

Question 18

Select the one chiral molecule.

A) CH₂Cl₂
B) CHFClBr
C) CH₃F
D) CHFCl₂
E) CH₄

Question 19

Which one of these hydrocarbons does not have isomers

A) C₇H₁₆
B) C₆H₁₄
C) C₅H₁₀
D) C₄H₈
E) C₃H₈

Question 20

The two molecules represented below are examples of

A) isomers
B) isotopes
C) alcohols
D) carboxylic acids
E) unsaturated hydrocarbons

Question 21

Which type of organic compound does not contain a carbonyl

A) carboxylic acid
B) ketone
C) aldehyde
D) ester
E) ether

Question 22

What is the name of the molecule CH₃CH₂CH₂CH₂CH₂CH₂CH₂CH₃

A) butane
B) hexane
C) heptane
D) octane
E) nonane

Question 23

Which of these is the systematic name for the compound represented below

A) 2,3-dibromopentane
B) 1,2-dibromopentane
C) 2,3-dibromopropane
D) 1,2-propane dibromide
E) 1,2-dibromopropane

Question 24

Which type of organic compound contains a hydroxyl functional group

A) ester
B) ether
C) carboxylic acid
D) aldehyde
E) ketone

Question 25

What is the name of the molecule CH₃-(CH₂)₈-CH₃

A) hexane
B) heptane
C) octane
D) nonane
E) decane

Question 26

Which option represents 1-butene

A) CH₃CH₂CH₂CH₃
B)CH $\equiv$ CCH₂CH₃
C) CH₂=CHCH₂CH₃
D) CH₂=CHCH₂CH₂CH₃
E) CH₃CH=CHCH₃

Question 27

Which one of these structures represents an ester functional group

A) A
B) B
C) C
D) D
E) E

Question 28

Which option represents 1,6-hexanediamine

A) HNCH₂CH₂CH₂CH₂CH₂CH₂NH
B) H₂NCH₂CH₂CH₂CH₂CH₂CH₂NH₂
C) H₂NC(NH₂)CH₂CH₂CH₂CH₂CH₃
D) HNC(NH)CH₂CH₂CH₂CH₂CH₃
E) H₃N⁺CH₂CH₂CH₂CH₂CH₂CH₂NH₃⁺

Question 29

Which one of the following functional groups is found in ketones

A) A
B) B
C) C
D) D
E) E

Question 30

Which one of these choices is the formula for an aldehyde

A) CH₃CHO
B) CH₃OCH₃
C) CH₃COCH₃
D) CH₃COOH
E) HC $\equiv$ CH

Question 31

Which one of the following functional groups is found in alcohols.

A) A
B) B
C) C
D) D
E) E

Question 32

The name for the compound with the formula CH₃CH₂CH₂CH₂OH is

A) propanol.
B) propane.
C) butanol.
D) pentane.
E) pentanol.

Question 33

The group of atoms that is responsible for the characteristic properties of a family of organic compounds is called a/an

A) reaction center.
B) functional group.
C) binding site.
D) enzyme.
E) polyatomic ion.

Question 34

The systematic name for the compound represented below is

A) 4,5-diethylheptane
B) 3-propyl-4-ethylhexane
C) 3-ethyl-4-propylhexane
D) 3-methyl-4-propylheptane
E) 2-ethyl-4-propylhexane

Question 35

Which one of the following functional groups is found in carboxylic acids

A) A
B) B
C) C
D) D
E) E

Question 36

Which of these is the systematic name for the compound represented below

A) 2-ethylbutane
B) 3-methylpentene
C) 3-methyl-1-pentene
D) 3-methyl-1-hexene
E) 2-methylhexane

Question 37

The correct structure for 2,3,3-trimethylpentane is

A)
B)
C)
D)

Question 38

Which option represents dimethyl ether

A) CH₃CH₂OH
B) CH₃OH
C) CH₃COCH₃
D) CH₃OCH₃
E) CH₃CH₂OCH₃

Question 39

"Wood alcohol" is the common name for

A) methanol.
B) ethanol.
C) propyl alcohol.
D) ethylene.
E) acetylene.

Question 40

Which type of organic compound does not contain a carbonyl group

A) ethers
B) carboxylic acids
C) ketones
D) aldehydes
E) esters

Question 41

The formulas for the alcohol and the carboxylic acid (respectively) from which the following ester may be synthesized are

Question 42

The formulas for the alcohol and the carboxylic acid (respectively) from which the following ester may be synthesized are
CH₃-(CH₂)₁₄-COOH and CH₃-(CH₂)₉-OH.

Question 43

Which functional group, when present in a compound that is allowed to stand in air, poses a danger of slowly yielding explosive peroxides

A) ether
B) alcohol
C) carboxylic acid
D) ketone
E) unsaturated hydrocarbon

Question 44

The reaction of Cl₂ with CH₄ to produce methyl chloride is an example of a/an

A) free radical reaction.
B) addition reaction.
C) reduction reaction.
D) ester hydrolysis.
E) polymerization

Question 45

Name the following compound:

A) 2,2-dimethylbutane
B) 3,3-dimethylbutane
C) 2,2-dimethylpropane
D) 2-methyl,2-ethyllpropane
E) None of the above

Question 46

Bromination of benzene (C₆H₆), an aromatic compound,

A) occurs by substitution rather than addition.
B) occurs by addition rather than substitution.
C) occurs more rapidly than bromination of a nonaromatic compound.
D) results in formation of 1,2,3,4,5,6-hexabromocyclohexane.
E) occurs in the absence of a catalyst.

Question 47

The formulas for the alcohol and the carboxylic acid (respectively) from which the following ester may be synthesized are
CH₃-CH₂-COOH and CH₃-CH₂-OH

Question 48

The reaction of an alcohol and a carboxylic acid yields

A) a hydrocarbon.
B) an ester.
C) an ether.
D) an aldehyde.
E) a ketone.

Question 49

Acetylene, C₂H₂, the simplest alkyne, can be prepared from "inorganic" materials. Which of these reactions is used to prepare acetylene in this way

A)2C + H₂ $\rarr$ C₂H₂
B)C₂H₄ $\rarr$ C₂H₂ + H₂
C)2CO + 2H₂O $\rarr$ C₂H₂ + H₂O₂
D)CaC₂ + 2H₂O $\rarr$ C₂H₂ + Ca(OH)₂

Question 50

Amines are

A) organic bases that react with water to produce ammonia.
B) organic acids that react with water to produce ammonia.
C) organic bases that react with acids to form ammonium salts.
D) organic acids that react with bases to form ammonium salts.
E) None of the above.

Question 51

Oxidation of the 2-propanol will produce a/an

A) aldehyde.
B) amine.
C) alkene.
D) ketone.
E) carboxylic acid.

Question 52

Which of the following compounds are isomers of each other
I.pentane
II. 2-methylbutane
III. 2,3-dimethylbutane
IV. 2,2-dimethylpropane
V.1-hexene

A) I, II and III
B) I, II and IV
C) II and III
D) III and IV
E) None of the above

Question 53

Which of these statements describes a condensation reaction

A) addition of H₂O to a double bond
B) linking an acid and an alcohol to make an ester and water
C) addition of H₂ to an alkene
D) oxidation of ethanol to acetaldehyde
E) hydrolysis of an ester

Question 54

The reaction of ethylene and water yields

A) an aldehyde.
B) an ester.
C) an alcohol.
D) an ether.
E) an organic acid.

Question 55

Esters are synthesized from two classes of organic compounds. Those two types of compounds are

A) acids and bases.
B) amines and alcohols.
C) alcohols and acids.
D) amines and alkenes.
E) alkenes and bases.

Question 56

Which is the product of the reaction of one mole of HCl with one mole of 1-butyne

A) 1-chloro-1-butene
B) 1-chloro-2-butene
C) 2-chloro-1-butene
D) ethyl chloride + acetylene

Question 57

Water and ethylene are combined at high temperature and pressures in the presence of sulfuric acid to produce ethanol according to the following reaction: CH₂=CH₂(g) + H₂O(g) $\rarr$ CH₃CH₂OH(g)
What is the hybridization of the bolded carbon atoms in the reactants and products, respectively

A) sp³_, sp²
B) sp²_, sp³
C) sp_, sp²
D) sp³_, sp
E) sp²_, sp²

Question 58

The expected product from the addition of HCl to CH₃-CH₂-CH=CH₂ is

A) CH₃-CH₂-CH=CHCl
B) CH₃-CH₂-CCl=CH₂
C) CH₃-CHCl-CH=CH₂
D) CH₃-CH₂-CH₂-CH₂Cl
E) CH₃-CH₂-CHCl-CH₃

Question 59

A compound with the formula C₆H₁₂ may or may not be a saturated hydrocarbon.

Question 60

Which of these reactions leads to a change in the hybridization of one or more carbon atoms

A) free radical halogenation of an alkane
B) hydrolysis of an ester to yield an acid and an alcohol
C) substitution of an aromatic ring using a halogen
D) oxidation of an alcohol to yield a carboxylic acid
E) neutralization of an amine using a strong mineral acid

Question 61

Name the following compound:

A) 2-isopropylpropane
B) 2,3-dimethylpentane
C) 2,3-dimethylbutane
D) 2,2-dimethylbutane
E) None of the above

Question 62

The molecule shown below is chiral, i.e. not superimposable on its mirror image.

Question 63

The systematic name for the hydrocarbon with the following structural formula is 1-ethyl-2-methylbutane.

Question 64

The reaction of hydrogen chloride gas with propene will yield 1-chloropropane as the main product.

Question 65

The systematic name for the compound with the following structural formula is 4,5-dimethyl-2-hexene.

Question 66

The oxidation product of 1-propanol when using Cr₂O₇^2- as the oxidizing agent is acetone.