Exercises Chapter 10

Chemistry: A Molecular Approach
Canadian Edition
Tro, Fridgen, Shaw
Clicker Questions by:
Jason A. Kautz
University of Nebraska-Lincoln
Matthew Lukeman
Acadia University

Copyright © 2014 Pearson Canada Inc.

Slide 10-1

Q1: PCl3 is an industrial chemical used in many herbicides and insecticides. What is the molecular shape of PCl3?

1A) bent
2B) tetrahedral
3C) trigonal pyramidal
4D) T-shaped
5E) trigonal planar

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Slide 10-2

Q2: What is the approximate angle of the O─C─O bond in the citric acid molecule below?
O
O

OH
OH

HO
1A) 120°
2B) 109.5°
3C) slightly smaller than 120°
4D) slightly smaller than 109.5°
5E) slightly larger than 120°
Copyright © 2014 Pearson Canada Inc.

O

HO

Slide 10-3

Q3: What is the hybridization of the carbon atoms in ethylene (H2C=CH2)?

1A) sp
2B) sp2
3C) sp3
4D) sp4
5E) not hybridized

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Slide 10-4

Q4: Which of the following molecules is the most polar? Br
Te

Cl
Br

F
Cl

Te

Br
Br

1A)

Te

Cl

Cl
F

Te

F

Cl

F

2B)

3C)

Br
Br

Te

Br
Cl

4D)

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Cl
Cl

Br

5E)

Slide 10-5

Q5: Which orbitals overlap to form the sigma bond between the carbon and hydrogen atoms in the ethylene (H2C=CH2)?
1A) sp3 on C & 1s on H
2B) sp2 on C & 2s on H
3C) sp on C & 2p on H
4D) sp2 on C & 1s on H
5E) sp on C & 1s on H

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Slide 10-6

Q6: When determining the electron geometry:
1A) only electrons on the central atom are considered.
2B) the electrons on all the atoms are considered.
3C) electrons on outer atoms affect the overall geometry.
4D) electrons in lone pairs are considered only when the molecule is polar.
5E) All of the above are true.

Copyright © 2014 Pearson Canada Inc.

Slide 10-7

Q7: Which of the following hybridization schemes allows the formation of only one -bond?
1A) sp3
2B) sp2
3C) sp
4D) All of the above allow for a -bond
5E) None of the above allow for a -bond

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