Chemistry In Context
9th Edition
ISBN: 9781259638145
Author: Fahlman, Bradley D., Purvis-roberts, Kathleen, Kirk, John S., Bentley, Anne K., Daubenmire, Patrick L., ELLIS, Jamie P., Mury, Michael T., American Chemical Society
Publisher: Mcgraw-hill Education,
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Textbook Question
Chapter 3, Problem 11Q
Assuming that the octet rule applies, draw the Lewis structure for each of these molecules.
- a. CCl4 (carbon tetrachloride, a substance formerly used as a cleaning agent)
- b. H2O2 (hydrogen peroxide, a mild disinfectant; the atoms are bonded in this order: H─O─O─H)
- c. H2S (hydrogen sulfide, a gas with the unpleasant odor of rotten eggs)
- d. N2 (nitrogen gas, the major component of the atmosphere)
- e. HCN (hydrogen cyanide, a molecule found in space and a poisonous gas)
- f. N2O (nitrous oxide, “laughing gas”; the atoms are bonded N─N─O)
- g. CS2 (carbon disulfide, used to kill rodents; the atoms are bonded S─C─S)
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Students have asked these similar questions
4. Ortho-Dichlorobenzene, C6H4Cl2, is obtained when two of the adjacent hydrogen
atoms in benzene are replaced with Cl atoms. A skeleton of the molecule is shown
here.
a.
Complete a Lewis structure for the molecule using bonds and electron
pairs as needed.
b.
Are there any resonance structures for the molecule? If so, sketch them.
c.
Are the resonance structures in (a) and (b) equivalent to one another as
they are in benzene?
H
H-C
H
C-H
The table below includes the bond enthalpy (the energy required to separate the diatomic molecule into its atoms) and the bond length for each diatomic molecule.
Diatomic Molecule
Bond Enthalpy (kJ/mol)
Bond Length (pm)
Cl2
243
199
O2
498
121
N2
945
110
Identify the observed trend between bond enthalpy and number of shared electrons: as the number of electrons shared between two atoms increases, the bond enthalpy ( increases / decreases / remains unchanged ).
Identify the observed trend between bond length and number of shared electrons: as the number of electrons shared between two atoms increases, the bond length ( increases / decreases / remains unchanged ).
2. Identify the true statement.
a. Polar covalent compounds result from a complete transfer of at least one electron.
b. Sodium is unlikely to form a bond with lithium.
c. Covalent compounds exist in large lattices.
d. The smallest unit of an ionic compound is a molecule.
3. A piece of zinc metal is placed in an aqueous solution of magnesium sulfate. The products of this
reaction are
a. ZnMg(s) + SO4(aq)
b. Mg(s) + ZnSO4(aq)
c. MgS(s) + ZnO4(aq)
d. ZnO(s) + MgSO4(aq)
e. There will be no reaction.
4. The shape of the NC13 molecule is
a. linear
b. trigonal planar
c. tetrahedral
d. trigonal pyramidal
e. V-shaped
Imi
5. Which of the following would have the highest boiling point?
a. NH3
b. PH3
c. AsH3
d. They would all have approximately the same boiling point.
20
6. Aqueous solutions of silver nitrate and sodium sulfate are mixed. The products of the reaction are
a. Ag2SO4(aq) + 2 NaNO3(aq)
b. AgSO4(s) + Na2(NO3)2(aq)
c. Ag2SO4(s) + 2 NaNO3(aq)
d. AgSO4(aq) + Na2(NO3
e. There will be no…
Chapter 3 Solutions
Chemistry In Context
Ch. 3.1 - Prob. 3.2YTCh. 3.1 - Using Equation 3.1, answer the following...Ch. 3.1 - Prob. 3.4YTCh. 3.1 - Prob. 3.5YTCh. 3.1 - Scientific Practices Energy from the Sun Examine...Ch. 3.2 - Skill Building Wavelength, Frequency, and Energy...Ch. 3.3 - Skill Building The ABCs of Solar UV a. Arrange...Ch. 3.3 - Prob. 3.9YTCh. 3.4 - Prob. 3.10YTCh. 3.4 - You Decide Exposure Examine the curve shown in...
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