Review
Homework Questions from Chemistry 1450 and 1451.
Your success in this course depends in part on your preparation from Chem 1451 and 1450.
This course can be thought of as an application of many principles from these two freshmen chemistry courses.
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Review
Topic |
You may want to refer to the following sections from the current 1450/1451 text Chemistry the Molecular Science (2nd Ed.) Moore, Stanitski, and Jurs © Thomson, Brookes/Cole 2005 |
The problems below are to be
completed and handed in for credit. Clear work including units on
all calculated results must be provided for full credit. |
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electron configurations |
Sec. 7.6 - 7.7 |
1. Problem 9.28 (p 239) of your
inorganic text |
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atomic orbital (shapes and orientations) |
Sec. 7.5 |
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ion charges, polyatomic ion formulas |
Sec. 3.5 - 3.7 |
2. Use electron configurations for
Ca and Ga to predict the most common charges of their ions. |
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Lewis dot structures including resonance |
Sec. 8.2, 8.4, 8.9, 8.10 |
3. Draw clear Lewis dot structures
for NH3, SO3, and SF4. |
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VSEPR (molecule shape) |
Sec. 9.2 |
4. Draw clear VSEPR sketches for NH3,
SO3, and SF4. |
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orbital hybridization |
Sec. 9.3 - 9.4 |
5. Give the hybridization of the
central atom in NH3, SO3, and SF4. |
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noncovalent interactions (polarity, dipole, etc.) |
Sec. 8.7, 9.5 - 9.6 |
6. Which is more polar: SF4 or CF4? Defend your choice. |
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periodic trends |
Sec. 7.8 - 7.11 |
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oxidation numbers |
Sec. 5.4 |
7. Determine the oxidation number
of sulfur in each of the following:
SO2, SO3, and SO3-2 |
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thermodynamics (DH,
DG, K) |
Sec. 6.9, 6.10, Sec. 14.1 - 14.6, Sec. 18.6 - 18.7 |
8. Use DG calculations to predict whether the decomposition of liquid
water into its gaseous elements is a product or reactant favored process at
standard conditions. |
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electrochemistry |
Sec. 19.2 - 19.6 |
9. Use information from Table 12.2
(p 313) of your inorganic text to determine the standard potential for the
reaction: Sn+2(aq) + 2Fe+3(aq) -->
Sn+4(aq) + 2Fe+2(aq) |
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acid/base chemistry (Bronsted and Lewis definitions) |
Sec. 16.1, 16.9 |
10. Give the formulas for the
conjugate bases of HCl, NH3, H2PO4-. Give the formulas for the conjugate acids
of NH3, H2PO4-,
OH- |