Name:_______________________________________________

Topic #12- Organic Chemistry Review Problems

1. Which organic compound is a saturated 6. Which formula represents 2-butene?

hydrocarbon?
A)
A) ethyne B) ethene
C) ethane D) ethanol
2. Which formula represents a hydrocarbon?
B)
A) CH 3CH 2CH 2CHO
B) CH 3CH 2CH 2CH 3
C) CH 3CH 2CH 2COOH
D) CH 3CH 2COOCH 3 C)
3. Which structural formula correctly represents a
hydrocarbon molecule?
A) B)
D)

C) D)

7. Given the structural formula for ethyne:

4. Which formula represents an unsaturated

What is the total number of electrons shared
hydrocarbon?
between the carbon atoms?
A) B)
A) 6 B) 2 C) 3 D) 4
8. Which series of hydrocarbons contains one triple
covalent bond?
C) D) A) alkyne B) alkene
C) alkane D) alkadiene
9. Which atoms can bond with each other to form
chains, rings, or networks?
5. A straight-chain hydrocarbon that has only one
A) nitrogen atoms B) oxygen atoms
double bond in each molecule has the general
C) carbon atoms D) hydrogen atoms
formula
10. Ethanol and dimethyl ether have different
A) CnH2n – 6 B) CnH2n – 2
chemical and physical properties because they
C) CnH2n D) CnH2n + 2 have different
A) functional groups
B) numbers of covalent bonds
C) percent compositions by mass
D) molecular masses

SFP Chemistry Page 1 Version 1

 11. Which two compounds have the same molecular 15. Given the three organic structural formulas
formula but different chemical and physical shown below:
properties?
A) CH 3CH 2Cl and CH 3CH 2Br
B) CH 3CHCH 2 and CH 3CH 2CH 3
C) CH 3CHO and CH 3COCH 3 Which organic compound classes are
D) CH 3CH 2OH and CH 3OCH3 represented by these structural formulas, as
12. Which structural formula represents a molecule shown from left to right?
that is not an isomer of pentane? A) ketone, organic acid, alcohol
A) B) B) ketone, aldehyde, alcohol
C) ester, organic acid, ketone
D) ester, aldehyde, organic acid
16. Given the structural formula:

C)
What is the IUPAC name of this compound?
A) methyl pentanoate
B) pentanol
C) pentanoic acid
D) D) pentanal
17. Which pair of compounds are alcohols?
A)
13. Molecules of 1-bromopropane and
2-bromopropane differ in B)
A) number of bromine atoms per molecule
B) molecular formula C)
C) number of carbon atoms per molecule
D)
D) structural formula
14. Which pair of compounds are isomers?
A) HCOOH and CH 3COOH
B) CH 3OCH3 and C2H5OH
C) P2O5 and P4O10
D) NO 2 and N2O4

SFP Chemistry Page 2 Version 1

 18. Which structural formula represents an 22. Given the structural formula:
aldehyde?
A) B)

This compound is classified as an

C) D)
A) aldehyde B) alcohol
C) amine D) amide
23. Which structural formula represents diethyl
ether?
19. Which is the structural formula for propanone
(acetone)? A) B)
A)

C) D)

B)
24. Consider the reaction below:

C)
What is the structural formula of the product
represented by the X?
A) B)
D)

C) D)
20. What is the IUPAC name for the compound
below?

25. What type of reaction is

A) dibromoethane CH3CH3 + Cl2 ® CH3CH2Cl + HCl?

B) dibromoethyne
A) an addition reaction
C) 1, 2-dibromoethane
B) a substitution reaction
D) 1, 2-dibromoethyne
C) saponification reaction
21. Which compound is an ester? D) an esterification reaction
A) CH 3OCH3 B) CH 3COOH
C) CH 3COOCH 3 D) CH 3OH

SFP Chemistry Page 3 Version 1

 26. Which type of reaction is represented by the equation below?

A) saponification B) polymerization
C) esterification D) fermentation
27. Which compound will react with CH3COOH to
form the ester methyl ethanoate?
A) CH 3OH B) CH 3OCH3
C) CH 3COCH 3 D) CH 3COOH
28. In the reaction:

CH 3COOH +CH3OH ® CH 3COOCH 3 + H2

O

the organic product can best be identified as

A) an alcohol B) an ester
C) an acid D) a ketone
29. The fermentation of C 6H12O6 will produce
carbon dioxide and
A) a polymer B) an ester
C) water D) an alcohol
30. Which is a product of the hydrolysis of an
animal fat by a strong base?
A) soap B) water
C) toluene D) gasoline

SFP Chemistry Page 4 Version 1

 Base your answers to questions 31 through 33 on the information below and on your
knowledge of chemistry.

In industry, ethanol is primarily produced by two different reactions. One process

involves the reaction of glucose in the presence of an enzyme that acts as a catalyst. The
equation below represents this reaction.

In another reaction, ethanol is produced from ethene and water. The equation below
represents this reaction in which H2SO4 is a catalyst.

Industrial ethanol can be oxidized using a catalyst to produce ethanal. The equation
representing this oxidation is shown below.

31. Explain why the hydrocarbon in equation 2 is unsaturated.

32. Identify the type of organic reaction represented by equation 1.

33. Identify the element that causes the reactant in equation 1 to be classified as an organic
compound.

SFP Chemistry Page 5 Version 1

 Base your answers to questions 34 and 35 on the information below and on your knowledge
of chemistry.

The equation below represents a reaction between propene and hydrogen bromide.

Cyclopropane, an isomer of propene, has a boiling point of –33°C at standard pressure

and is represented by the formula below.

34. Explain, in terms of molecular formulas and structural formulas, why cyclopropane is an
isomer of propene.

35. Identify the class of organic compounds to which the product of this reaction belongs.

It is a Halide

SFP Chemistry Page 6 Version 1

 36. Base your answer to the following question on the information below and on your knowledge
of chemistry.

The unique odors and flavors of many fruits are primarily due to small quantities of a
certain class of organic compounds. The equation below represents the production of one
of these compounds.

State the class of organic compounds to which product 1 belongs.

Base your answers to questions 37 and 38 on the information below and on your knowledge
of chemistry.

Natural gas and coal are two fuels burned to produce energy. Natural gas consists of
approximately 80% methane, 10% ethane, 4% propane, 2% butane, and other
components.
The burning of coal usually produces sulfur dioxide, and sulfur trioxide, ,
which are major air pollutants. Both and react with water in the air to form
acids.
37. Draw a structural formula for the hydrocarbon that is approximately 2% of natural gas.

38. Write the general formula for the homologous series that includes the components of the
natural gas listed in this passage.

SFP Chemistry Page 7 Version 1

 39. Base your answer to the following question on the information below and on your knowledge
of chemistry.

Ethane, , has a boiling point of at standard pressure. Ethanol, , has

a much higher boiling point than ethane at standard pressure. At STP, ethane is a gas and
ethanol is a liquid.
Identify the class of organic compounds to which ethanol belongs.

40. Base your answer to the following question on the information below and on your knowledge
of chemistry.

Ethene and hydrogen can react at a faster rate in the presence of the catalyst platinum.
The equation below represents a reaction between ethene and hydrogen.

Explain why the reaction is classified as an addition reaction.

SFP Chemistry Page 8 Version 1