Multiple
Choice
Identify the letter of the choice that best completes the statement or answers the
question.
|
|
|
1.
|
Which of the following
compounds would be expected to have the strongest ionic bonds?
a. | SrO | b. | RbI | c. | NaBr | d. | MgO | e. | BaS | |
|
|
|
|
2.
|
If two or more molecules or
ions have the same number of electrons and the same Lewis structure, they are said to be
________.
a. | covalent | b. | resonant
structures | c. | neutral | d. | alkanes | e. | isoelectronic | |
|
|
|
|
3.
|
Which of the following are
resonance structures for nitrite ion, NO2-?
a. | 1 and 2 | b. | 2 and 4 | c. | 1,2 and 3 | d. | 2 and 3 | e. | 1, 2 and 4 | |
|
|
|
|
4.
|
What is the correct Lewis
structure for IF3?
|
|
|
5.
|
Which of the following species
will have a Lewis structure most like that of thiosulfate ion,
S2O32-?
a. | XeF4 | b. | SF4 | c. | ICl4- | d. | SO3 | e. | IO4- | |
|
|
|
|
6.
|
In the Lewis structure for
dinitrogen tetraoxide, how many lone pairs of electrons surround each nitrogen
atom?
|
|
|
7.
|
Use VSEPR theory to predict the
molecular geometry of HCN.
a. | bent | b. | linear | c. | trigonal planar | d. | tetrahedral | e. | octahedral | |
|
|
|
|
8.
|
Use VSEPR theory to predict the
electron pair geometry of IF5.
a. | tetrahedral | b. | trigonal bipyramidal | c. | see-saw | d. | square pyramidal | e. | octahedral | |
|
|
|
|
9.
|
How many sigma (s) bonds and pi (p) bonds are in the following molecule?
a. | seven s and two
p | b. | six s and two
p | c. | eleven s and zero
p | d. | nine s and two
p | e. | two s and nine
p | |
|
|
|
|
10.
|
In which of the following
molecules or ions does the central atom have sp3 hybridization:
SO42-, XeF4, ICl4-, and
NH3?
a. | SO42- and
NH3 | b. | SO42- and
ICl4- | c. | XeF4 and
NH3 | d. | ICl4- and
NH3 | e. | XeF4, ICl4-, and
NH3 | |
|
|
|
|
11.
|
What is the hybridization of
the central nitrogen in N3-?
a. | sp | b. | sp2 | c. | sp3 | d. | sp3d | e. | sp3d2 | |
|
|
|
|
12.
|
What is the hybridization of
the central atom in a molecule with a square planar molecular geometry?
a. | sp | b. | sp2 | c. | sp3 | d. | sp3d | e. | sp3d2 | |
|
|
|
|
13.
|
One product of the combustion
of methane is carbon dioxide. What change in hybridization of the carbon occurs in this
reaction?
a. | sp3 to
sp2 | b. | sp3 to
sp | c. | sp3 to
sp3d | d. | sp2 to
sp3d2 | e. | sp2 to
sp | |
|
|
|
|
14.
|
For which of the following
compounds do cis and trans isomers exist?
a. | 1 only | b. | 2 only | c. | 3 only | d. | 1 and 2 | e. | 1, 2, and 3 | |
|
|
|
|
Molecular Orbital
Diagram
The
following molecular orbital diagram may be used for the following problems.
For oxygen and fluorine, the s2p orbital
should be lower in energy than the p2p. However, the diagram will still yield correct bond
order and magnetic behavior for these molecules.
|
|
|
15.
|
Refer to Molecular Orbital
Diagram. Which species has the shortest bond length?
a. | N22+ | b. | N2+ | c. | N2 | d. | N2- | e. | N22- | |
|
|
|
|
16.
|
What is the bond order for B2?
|
|
|
17.
|
Which of the following
molecules may be a cycloalkane?
a. | C2H4 | b. | C3H4 | c. | C4H10 | d. | C6H10 | e. | C5H10 | |
|
|
|
|
18.
|
What is the molecular formula
of this hydrocarbon?
a. | C6H6 | b. | C5H10 | c. | C5H9 | d. | C5H8 | e. | C5H6 | |
|
|
|
|
19.
|
What is the molecular formula
for 4,5,6-trimethyl-cis-2-heptene?
a. | C8H18 | b. | C9H20 | c. | C10H20 | d. | C10H22 | e. | C11H22 | |
|
|
|
|
20.
|
What is the balanced equation
for the combustion of 2-methylpropene?
a. | C4H8(g) + 6
O2(g) → 4
CO2(g) + 4 H2O(l) | b. | 2 C4H10(g) + 13
O2(g) → 8
CO2(g) + 10 H2O(l) | c. | C3H8(g) + 5
O2(g) → 3
CO2(g) + 4 H2O(l) | d. | 2 C3H8(g) + 7
O2(g) → 6 CO
(g) + 8 H2O(l) | e. | 2 C3H6(g) + 9
O2(g) → 6
CO2 (g) + 6 H2O(l) | |
|
|
|
|
21.
|
What is the name of the
following benzene derivative?
a. | 3-chlorobenzoic
acid | b. | 2-chlolobenzoic acid | c. | 1-nitro-3-chlorobenzene | d. | 1-carbonate-3-chlorobenzene | e. | 3-chlorotoluene | |
|
|
|
|
22.
|
All of the following functional
groups are members of the class of compounds known as carbonyls EXCEPT
a. | amides. | b. | ethers. | c. | aldehydes. | d. | carboxylic
acids. | e. | ketones. | |
|
|
|
|
23.
|
When a secondary alcohol is
oxidized, the product is a(n)
a. | ketone | b. | aldehyde | c. | ester | d. | amine | e. | amide | |
|
|
|
|
24.
|
What is the classification of
the molecule below?
a. | alcohol | b. | soap | c. | aldehyde | d. | carboxylic acid | e. | polymer | |
|
|
|
|
25.
|
Polyethylene
a. | is an example of a condensation polymer. | b. | reacts with methanol to form Dacron. | c. | contains no double bonds. | d. | contains equal numbers of cis and
trans bonds. | e. | cannot form branched
chains. | |
|
|
Essay - note that these questions will not be graded by the computer, but
answers will be provided
|
|
|
26.
|
A molecule has a trigonal
bipyramidal electron geometry and a see-saw molecular geometry. Is the lone pair of electrons
occupying an equatorial or an axial position? Explain your answer.
|
|
|
27.
|
The second ionization energy of
potassium is much greater than that of calcium. Explain.
|
|
|
28.
|
Draw the Lewis structures for
all the possible isomers of C3H6O.
|
|
|
29.
|
The molecule
1,2-dichloro-4-ethylheptane is made by addition of Cl2 to an alkene. Write a balanced
chemical equation for this reaction.
|