Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Question
Please help with question 3
![### Experimental Procedure and Data Collection
**Documentation Reminder:**
Ensure all observations and measurements are documented accurately.
**Data Table:**
| Data Entry | Trial 1 | Trial 2 |
|--------------------------------------------|--------------------------|--------------------------|
| Quantities Used | 30.0 mL of 0.250M CaCl₂ | 50.0 mL of 0.250M CaCl₂ |
| | 15.0 mL of 0.750M Na₂CO₃ | 10.0 mL of 0.750M Na₂CO₃ |
| **Theoretical Yield of Precipitate** | (Record here, show calculations below table) | |
| **Mass of Filter Paper BEFORE experiment** | 0.53 g | 0.53 g |
| **Mass of DRY Filter Paper and Precipitate (day 2)** | | |
| **Mass of Calcium Carbonate (Precipitate, day 2)** | | |
| **Percent Yield** | | |
**Calculations Section:**
For each trial, calculate the theoretical yield of Calcium Carbonate (CaCO₃) using the limiting reactant and amounts of each reactant used.
- **Trial 1:**
- [Details for calculation go here]
- **Trial 2:**
- [Details for calculation go here]
---
This table is used to record the quantities of chemicals used in two different trials and the masses relevant for calculating experimental yield. Theoretical yield calculations should be based on the stoichiometry of the reaction and the limiting reagent present in each trial. Ensure observations for each step in the experiment are noted thoroughly for both trials.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6c605e87-2c96-4aa2-99a1-2c5d12ea3556%2F28bc325a-87df-4abc-b8e5-5c3bf36abc16%2F9oda74g_processed.jpeg&w=3840&q=75)
Transcribed Image Text:### Experimental Procedure and Data Collection
**Documentation Reminder:**
Ensure all observations and measurements are documented accurately.
**Data Table:**
| Data Entry | Trial 1 | Trial 2 |
|--------------------------------------------|--------------------------|--------------------------|
| Quantities Used | 30.0 mL of 0.250M CaCl₂ | 50.0 mL of 0.250M CaCl₂ |
| | 15.0 mL of 0.750M Na₂CO₃ | 10.0 mL of 0.750M Na₂CO₃ |
| **Theoretical Yield of Precipitate** | (Record here, show calculations below table) | |
| **Mass of Filter Paper BEFORE experiment** | 0.53 g | 0.53 g |
| **Mass of DRY Filter Paper and Precipitate (day 2)** | | |
| **Mass of Calcium Carbonate (Precipitate, day 2)** | | |
| **Percent Yield** | | |
**Calculations Section:**
For each trial, calculate the theoretical yield of Calcium Carbonate (CaCO₃) using the limiting reactant and amounts of each reactant used.
- **Trial 1:**
- [Details for calculation go here]
- **Trial 2:**
- [Details for calculation go here]
---
This table is used to record the quantities of chemicals used in two different trials and the masses relevant for calculating experimental yield. Theoretical yield calculations should be based on the stoichiometry of the reaction and the limiting reagent present in each trial. Ensure observations for each step in the experiment are noted thoroughly for both trials.
![### Laboratory Experiment Questions and Explanations
#### Question 2
**Scenario:**
A student introduces an object to aid in stirring a solution but does not rinse the object and places it directly on the countertop. They notice a white powder that resides on the stirrer.
**Question:**
How will their calculation for percent error be affected? Explain.
**Student Response:**
The percent error would be incorrect because we wouldn’t [full explanation is missing].
#### Question 3
**Question:**
Why must the filter paper be dried before obtaining the final mass?
**Explanation:**
Filter paper must be dried before obtaining the final mass to ensure accuracy in mass measurements. Any remaining moisture can add extra weight, leading to errors in the calculated mass of the desired substance.
#### Question 4
**Question:**
Would you classify this process as an effective method to form Calcium Carbonate? What are the limitations of the experiment if it were to be done on a commercial level? What changes would you make if you needed to perform this in a commercial setting?
**Discussion Points:**
- **Effectiveness:** Discuss the efficiency and yield of calcium carbonate using this method.
- **Limitations:** Consider scalability, cost, resource availability, and environmental impact in a commercial setting.
- **Proposed Changes:** Suggest modifications to optimize the process for large-scale production, such as improving reaction conditions, automation, and waste management.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6c605e87-2c96-4aa2-99a1-2c5d12ea3556%2F28bc325a-87df-4abc-b8e5-5c3bf36abc16%2Fo2fwroa_processed.jpeg&w=3840&q=75)
Transcribed Image Text:### Laboratory Experiment Questions and Explanations
#### Question 2
**Scenario:**
A student introduces an object to aid in stirring a solution but does not rinse the object and places it directly on the countertop. They notice a white powder that resides on the stirrer.
**Question:**
How will their calculation for percent error be affected? Explain.
**Student Response:**
The percent error would be incorrect because we wouldn’t [full explanation is missing].
#### Question 3
**Question:**
Why must the filter paper be dried before obtaining the final mass?
**Explanation:**
Filter paper must be dried before obtaining the final mass to ensure accuracy in mass measurements. Any remaining moisture can add extra weight, leading to errors in the calculated mass of the desired substance.
#### Question 4
**Question:**
Would you classify this process as an effective method to form Calcium Carbonate? What are the limitations of the experiment if it were to be done on a commercial level? What changes would you make if you needed to perform this in a commercial setting?
**Discussion Points:**
- **Effectiveness:** Discuss the efficiency and yield of calcium carbonate using this method.
- **Limitations:** Consider scalability, cost, resource availability, and environmental impact in a commercial setting.
- **Proposed Changes:** Suggest modifications to optimize the process for large-scale production, such as improving reaction conditions, automation, and waste management.
Expert Solution
Step 1
Answer-3
Filter paper is a type of semipermeable paper that has many tiny pores that allow only liquid particles to pass through it and that's how through filter paper solid particles can be separated from liquids.
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