| 1. | Safety |
| 2. |
Objectives/Overview |
| 3. |
Procedures |
|
4. |
Observations |
| 5. | |
| 6. | |
| 7. | |
| 8. | Conclusions |
| 9. | Grading Scale |
| 10. | Review Prelab Questions |
|
11. |
Review Postlab Questions |
Experiment
20
Qualitative
Analysis of Anions
PRE-LABORATORY QUESTIONS
References: Brown, Lemay, and Bursten, Chemistry the Central Science, 8th ed. (2000)
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pp. 109-113 (solubility, precipation reactions,ionic equations)
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pp. 117-119 (neutralization reactions)
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pp. 593-618 (strong and weak acids and bases, pH)
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pp. 621-622 (pH effects of salts)
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pp. 644-650 (buffers)
- pp. 659-669 (solubility and Ksp)
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pp. 669-674 (separation of metallic ions via precipitation and solubility criteria)
Learning
Center: SSM Lesson 5 (net ionic equations).
Writing NIE ; solving "who-dun-its" (study guides); answers
to pre- and post-lab questions.
1. Write net ionic equations for the following:
a. Fe(OH)3(s) + HCl(aq) _b. Ca2+(aq) + (NH4)2CO3(aq) _c. Cr3+(aq) + NH3(aq) _
2. List all of the Group III, IV, and V cations that correspond to the following:
a. Does not precipitate when treated with a buffered NH3 solution or when treated with (NH4)2CO3.
b. A Group III cation that will dissolve in excess concentrated NaOH solution.
