AnswersS1S Chemistry B E4912 - AGLab: Titration

Lab: Titration — Unit test Answers

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1
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How do aromatic hydrocarbons differ from alkenes?

A
Aromatic hydrocarbons are unsaturated, and alkenes are saturated.
B
Alkenes are saturated, and aromatic hydrocarbons are unsaturated.
C
Aromatic hydrocarbons are flat, geometric molecules, and alkenes are not.
D
Alkenes are flat, planar molecules, and aromatic hydrocarbons are not.
2
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Which molecule is an aromatic hydrocarbon?

A
Two central carbons are double bonded to each other; the pair is single bonded to C H 3 above left and right, and to H below left and right.
Option A
B
A skeletal model has line segments that slant up, down, up, and up again in a triple bond.
Option B
C
Two hexagon rings with carbons at each corner have alternating double bonds and share one side. H is single bonded to all the C's except the ones on the shared side.
Option C
D
Two carbons are triple bonded to each other; each has a single bond to the outside.
Option D
3

Which of the following best states the difference between an alcohol and an ether?

A
In an alcohol, a carbon atom is double bonded to an oxygen atom; in an ether, a carbon atom is triple bonded to another carbon atom.
B
In an ether, a carbon atom is double bonded to an oxygen atom; in an alcohol, a carbon atom is triple bonded to another carbon atom.
C
In an alcohol, a carbon atom is single bonded to a hydroxide group (OH–); in an ether, an oxygen atom is single bonded to two carbon atoms.
D
In an ether, a carbon atom is single bonded to a hydroxide group (OH–); in an alcohol, an oxygen atom is single bonded to two carbon atoms.
4

Consider the hydrocarbon below.Which of these is a trans- isomer of the above hydrocarbon?

Question illustration
A
A skeletal model with a 6 carbon chain, with a double bond between the second and third carbon.
Option A
B
A skeletal model with line segments that slant up, run flat in a double bond, slant down, run flat, and slant down again.
Option B
C
A skeletal model of a 5 carbon chain with a double bond between the first and second carbons.
Option C
D
A skeletal model with line segments that slant up, fun flat in a double bond, slant up, and run flat.
Option D
5

The structural formula of an unsaturated fatty acid resembles the following diagram.Which of these is a geometric isomer of the above compound?

Question illustration
A
A chain of 7 C atoms has the left end bonded above to O H and double bonded below to O. The fourth and fifth C are double-bonded to each other and have H below but not above; all other C's have H above and below, and the right-end C has H to the right.
Option A
B
A chain of 7 C atoms has H to the left, above, and below, except the third and fourth C are double-bonded to each other and only have O above; the final C in the chain has no H, but is double bonded above to O and single bonded below to O H.
Option B
C
A chain of 7 C atoms has the left end double-bonded above to O and single bonded below to O H. The fourth and fifth C are double-bonded to each other. The fourth C has H above only, and the fifth C has H below only; all other C's have H above and below, and the right-end C has H to the right.
Option C
D
A chain of C atoms has H above, below and to the right; the left most C has instead O double-bonded above and O H single-bonded below,
Option D
6

What is the name of this alkane?

Question illustration
A
1-methyl,3-ethylnonane
B
1-methyl,5-ethylisohexane
C
1-ethyl,3-methylcyclohexane
D
1-ethyl,5-methylcyclohexane
7

What is a characteristic of branched chained alkanes?

A
They have one or more rings of carbon atoms.
B
They have carbon atoms that are double-bonded to other carbon atoms.
C
They have more than two carbons that are bonded to only one other carbon.
D
They have carbons bonded in a single row from one end of the molecule to the other end of the molecule.
8

Which of the following is a characteristic of a typical carbon atom?

A
Carbon has a high melting point.
B
Carbon dissolves easily in water.
C
Carbon can form single, double, and triple bonds.
D
Carbon is one of the least common elements in the universe.
9

Which headings should be used to complete this table?

Question illustration
A
ether (left column); ester (right column)
B
ketone (left column); aldehyde (right column)
C
alkyl halide (left column); amine (right column)
D
alcohol (left column); carboxylic acid (right column)
10

Saturated hydrocarbons are major components of

A
vegetable oil.
B
alcohol.
C
gasoline.
D
salt crystals.
11

Which compound contains a triple bond?

A
2 C's are connected with a single line, and each has an H attached by a single line above, below, and outside.
Option A
B
2 C's are connected with 2 parallel lines. There are H's connected with single lines above left, above right, below right, and below left of the 2 C's.
Option B
C
A C is connected to an O with 2 parallel vertical lines, and below left to H with a single line and below right to O H with a single line.
Option C
D
2 C's are connected by 3 parallel lines. There is an H connected with a single line to the left and to the right.
Option D
12

What is the name of this alkane?

Question illustration
A
1-methyl,3-ethylnonane
B
1-methyl,5-ethylisohexane
C
1-ethyl,3-methylcyclohexane
D
1-ethyl,5-methylcyclohexane
13

Which functional group is found in methanol?

A
mc008-1.jpg
Option A
B
mc008-2.jpg
Option B
C
mc008-3.jpg
Option C
D
mc008-4.jpg
Option D
14

What is the value of n in CH3(CH2)nCH3 if the name of the hydrocarbon is heptane?

A
2
B
5
C
7
D
8
15

Consider the tables below.Table AOrganic solventNoPerfumeNoFuelNoAnestheticNoAdhesiveYesTable BOrganic solventNoPerfumeNoFuelYesAnestheticNoAdhesiveNoTable COrganic solventYesPerfumeNoFuelNoAnestheticYesAdhesiveNoTable DOrganic solventNoPerfumeYesFuelNoAnestheticNoAdhesiveNoWhich table correctly describes the uses of aldehydes?

A
table A
B
table B
C
table C
D
table D

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