**Exercise in Analytical Chemistry: Interpretation of Ion Presence** --- **2. Analysis of Filtrate and Its Impact on Ion Determination** In performing an unknown analysis, a student did a sloppy separation of solid PbSO₄ from the filtrate, leaving some unwanted Pb⁺² ions in the solution. What effect may this have on the determination of the following ions? Answer with either **"no effect"** or **"false positive"**. A false positive indicates the student might think the ions are present when, in fact, they are not. - a. Pb⁺² ____________________________________ - b. Ag⁺¹ ____________________________________ - c. Zn⁺² ____________________________________ - d. Fe⁺³ ____________________________________ --- **Instruction Notes for Educators:** - **Objective:** This exercise aims to reinforce student understanding of the consequences of improper separation techniques on analytical results. - **Discussion Points:** - Discuss the common sources of errors in ion separation and identification. - Emphasize the importance of precision and accuracy in analytical procedures. **Possible Student Answers:** - a. Pb⁺² __no effect__ - b. Ag⁺¹ __false positive__ - c. Zn⁺² __no effect__ - d. Fe⁺³ __no effect__ **Explanation of Graphs/Diagrams:** - No graphs or diagrams are presented in this exercise. --- This exercise encourages critical thinking and understanding of the practical aspects of analytical chemistry, specifically dealing with ion separation and detection errors.
**Exercise in Analytical Chemistry: Interpretation of Ion Presence** --- **2. Analysis of Filtrate and Its Impact on Ion Determination** In performing an unknown analysis, a student did a sloppy separation of solid PbSO₄ from the filtrate, leaving some unwanted Pb⁺² ions in the solution. What effect may this have on the determination of the following ions? Answer with either **"no effect"** or **"false positive"**. A false positive indicates the student might think the ions are present when, in fact, they are not. - a. Pb⁺² ____________________________________ - b. Ag⁺¹ ____________________________________ - c. Zn⁺² ____________________________________ - d. Fe⁺³ ____________________________________ --- **Instruction Notes for Educators:** - **Objective:** This exercise aims to reinforce student understanding of the consequences of improper separation techniques on analytical results. - **Discussion Points:** - Discuss the common sources of errors in ion separation and identification. - Emphasize the importance of precision and accuracy in analytical procedures. **Possible Student Answers:** - a. Pb⁺² __no effect__ - b. Ag⁺¹ __false positive__ - c. Zn⁺² __no effect__ - d. Fe⁺³ __no effect__ **Explanation of Graphs/Diagrams:** - No graphs or diagrams are presented in this exercise. --- This exercise encourages critical thinking and understanding of the practical aspects of analytical chemistry, specifically dealing with ion separation and detection errors.
General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter1: Chemistry And Measurement
Section: Chapter Questions
Problem 1.143QP
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![**Exercise in Analytical Chemistry: Interpretation of Ion Presence**
---
**2. Analysis of Filtrate and Its Impact on Ion Determination**
In performing an unknown analysis, a student did a sloppy separation of solid PbSO₄ from the filtrate, leaving some unwanted Pb⁺² ions in the solution. What effect may this have on the determination of the following ions? Answer with either **"no effect"** or **"false positive"**. A false positive indicates the student might think the ions are present when, in fact, they are not.
- a. Pb⁺² ____________________________________
- b. Ag⁺¹ ____________________________________
- c. Zn⁺² ____________________________________
- d. Fe⁺³ ____________________________________
---
**Instruction Notes for Educators:**
- **Objective:** This exercise aims to reinforce student understanding of the consequences of improper separation techniques on analytical results.
- **Discussion Points:**
- Discuss the common sources of errors in ion separation and identification.
- Emphasize the importance of precision and accuracy in analytical procedures.
**Possible Student Answers:**
- a. Pb⁺² __no effect__
- b. Ag⁺¹ __false positive__
- c. Zn⁺² __no effect__
- d. Fe⁺³ __no effect__
**Explanation of Graphs/Diagrams:**
- No graphs or diagrams are presented in this exercise.
---
This exercise encourages critical thinking and understanding of the practical aspects of analytical chemistry, specifically dealing with ion separation and detection errors.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fdfa9fb5b-4418-46a2-b12b-f94a4980f99e%2F86e56a17-b0cc-4520-951f-950cb231c291%2Fu83aauq.jpeg&w=3840&q=75)
Transcribed Image Text:**Exercise in Analytical Chemistry: Interpretation of Ion Presence**
---
**2. Analysis of Filtrate and Its Impact on Ion Determination**
In performing an unknown analysis, a student did a sloppy separation of solid PbSO₄ from the filtrate, leaving some unwanted Pb⁺² ions in the solution. What effect may this have on the determination of the following ions? Answer with either **"no effect"** or **"false positive"**. A false positive indicates the student might think the ions are present when, in fact, they are not.
- a. Pb⁺² ____________________________________
- b. Ag⁺¹ ____________________________________
- c. Zn⁺² ____________________________________
- d. Fe⁺³ ____________________________________
---
**Instruction Notes for Educators:**
- **Objective:** This exercise aims to reinforce student understanding of the consequences of improper separation techniques on analytical results.
- **Discussion Points:**
- Discuss the common sources of errors in ion separation and identification.
- Emphasize the importance of precision and accuracy in analytical procedures.
**Possible Student Answers:**
- a. Pb⁺² __no effect__
- b. Ag⁺¹ __false positive__
- c. Zn⁺² __no effect__
- d. Fe⁺³ __no effect__
**Explanation of Graphs/Diagrams:**
- No graphs or diagrams are presented in this exercise.
---
This exercise encourages critical thinking and understanding of the practical aspects of analytical chemistry, specifically dealing with ion separation and detection errors.
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