Download 10.4b Organic Practice Test Version 2

Organic Chemistry Practice Test #2
(Do not write on this test please!!)
1. The process in which large organic molecules are broken down into smaller
molecules to increase the yield of gasoline from petroleum is called
a) cracking
b) esterification
c) hydrogenation
d) polymerization
2. In the process of fractional distillation, a mixture of hydrocarbons is separated into its
fractions according to their
a) boiling points
b) melting points
c) fusion points
d) fraction points
Use the following structural formulas to answer NR#1
NR#1
Bromine water is added to each of the compounds in solution. The reddish-brown
bromine colour is observed to disappear for two of those compounds. Those
compounds are ____, ____.
Use the following information to answer NR#2
Descriptions of four processes involved in the refining of crude oil to form petroleum are
given below.
1. Hydrocarbons are heated under pressure, in the absence of air, to break
carbon–carbon bonds.
2. Hydrocarbons undergo successive heating, evaporation, cooling, and
condensation.
3. Short-chain molecules are combined with an acid catalyst, under controlled
heat and pressure, to form larger molecules.
4.
Hydrocarbons are mixed with catalysts and heated, under very high
pressure, to convert straight-chain molecules to branched, cyclic, or aromatic
molecules.
Match the numbered descriptions with the names of those processes below.
––––
Fractional Distillation
––––
Cracking
––––
Reforming
––––
Alkylation
3. Which one of the following statements best describes an elimination reaction?
a) Carbon atoms in the organic product are bonded to fewer atoms than the
carbon atoms in the organic reactant.
b) A hydrogen atom or functional group is replaced with a different atom or
functional group.
c) Atoms are added to a double or triple carbon–carbon bond.
d) Two molecules are combined and a small molecule, such as water, is
produced as a second product.
4. The addition of a catalyst is required for the conversion of 2-propanol to propene. An
appropriate catalyst for this reaction is
a) KMnO4
b) H2SO4
c) NaOH
d) H2
5. Which of the following equations best shows the complete combustion of propane?
a) 2C2H6(g) + 7O2(g)
4CO2(g) + 6H2O(g)
b) 2C2H6(g) + 5O2(g)
C(s) + 2CO(g) + CO2(g) + 6H2O(g)
c) 2C3H8(g) + 9O2(g)
d) C3H8(g) + 5O2(g)
6CO2(g) + 6H2O(g)
3CO2(g) + 4H2O(g)
6. Which of the following compounds could be formed in the addition reaction of Br2
and but-1-ene?
7. What type of reaction is shown below?
CH3CH2OH + HCl → CH3CH2Cl + H2O
a)
b)
c)
d)
substitution
elimination
oxidation
addition
8. In a reaction between hex-2-ene and hydrochloric acid, which of the following will be
the product(s)?
a) 1-chlorohexane only
b) 2-chlorohexane only
c) 3-chlorohexane only
d) both (b) and (c)
9. What compounds would you need to synthesize the molecule below?
a)
b)
c)
d)
propan-1-ol and methanoic acid
butan-1-ol and methanoic acid
methanol and propanoic acid
methanol and butanoic acid
NR#3
The reaction for the complete combustion of methanol is represented below.
The coefficients a, b, c, and d represent integer numbers used to balance this
equation. When correctly balanced, the numerical sequence a,b,c,d is ___, ___, ___,
___.
NR#4
The following is a list of reactants labelled (a), (b), (c), and (d), and a list of reaction
classifications labelled 1, 2, 3, and 4.
a) 2-bromobutane + hydroxide ion 
1. addition
b) propene + hydrochloric acid 
2. elimination
c) ethanoic acid + heptan-3-ol 
3. substitution
d) 2-chlorobutane + sodium ethoxide 
4. esterification
Determine the type of reaction that each combination of reactants will undergo and
indicate the type of reaction by number in the order (a), (b), (c), and (d). ___, ___,
___, ___.
10. Four numbered reactions are given below. When the reactions are listed in order of
addition, substitution, esterification, and elimination, the number sequence that
corresponds is ___, ___, ___, ___.
1. CH3CH2COOH + CH3OH  CH3CH2COOCH3 + H2O
2. CH3CH2OH  CH2CH2 + H2O
3. CH3CCH + HBr  CH3CBrCH2
4. CH3CH2CH2CH3 + Br2  CH3CH2CH2CH2Br + HBr
Use the following to answer questions 11, 12, and 13.
11. When Reactions A, B, and C are classified according to the key given in Chart 1, the
number sequence that would correspond to ABC is ___, ___, ___.
12. When Reactions D, E, and F are classified according to the key given in Chart 1, the
number sequence that would correspond to DEF is ___, ___, ___.
13. When the reagents W, X, Y, and Z are classified according to the key given in Chart
1, the number sequence that would correspond to WXYZ is ___, ___, ___, ___.