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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![**Hydrate Analysis and Calculation**
**Introduction to Hydrates:**
Hydrates are compounds that contain water molecules within their crystalline structure. These water molecules can be removed by heating, leading to a change in the compound's mass.
**Task Overview:**
1. **Substance Identification:**
Your unknown hydrate is one of the following substances. Please identify each of these hydrates:
- a. CuSO₄ • 5 H₂O
- b. MgSO₄ • 7 H₂O
- c. CaSO₄ • 2 H₂O
2. **Calculation Task:**
Complete the following table and calculate the theoretical mass percent water for each of the hydrated salts. Utilize the pre-lab reading for additional details if required.
**Data Table and Calculation Example:**
| | Mass of Anhydrous Salt (amu) | Mass of H₂O Molecules in Hydrate (amu) | Mass of Hydrate (amu) | Percent H₂O in Hydrate |
|-------------------|-----------------------------|---------------------------------------|-----------------------|------------------------|
| **CuSO₄ • 5 H₂O** | 159.61 | 18.02 x 5 = 90.10 | | |
| **MgSO₄ • 7 H₂O** | | | | |
| **CaSO₄ • 2 H₂O** | | | | |
**Instructions:**
- Fill in the table using the provided masses.
- Calculate the percent water content for each hydrate using the formula:
\[ \text{Percent H}_2\text{O} = \left(\frac{\text{Mass of H}_2\text{O in Hydrate}}{\text{Mass of Hydrate}}\right) \times 100 \]
**Note:**
Ensure to show all your work below for the calculations in the table.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F00437ad0-c521-4cbf-b1d5-8afcb4493cf2%2F098b1458-6c9f-48b4-a6e5-e8bec6764d80%2Fv2ux6qt_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Hydrate Analysis and Calculation**
**Introduction to Hydrates:**
Hydrates are compounds that contain water molecules within their crystalline structure. These water molecules can be removed by heating, leading to a change in the compound's mass.
**Task Overview:**
1. **Substance Identification:**
Your unknown hydrate is one of the following substances. Please identify each of these hydrates:
- a. CuSO₄ • 5 H₂O
- b. MgSO₄ • 7 H₂O
- c. CaSO₄ • 2 H₂O
2. **Calculation Task:**
Complete the following table and calculate the theoretical mass percent water for each of the hydrated salts. Utilize the pre-lab reading for additional details if required.
**Data Table and Calculation Example:**
| | Mass of Anhydrous Salt (amu) | Mass of H₂O Molecules in Hydrate (amu) | Mass of Hydrate (amu) | Percent H₂O in Hydrate |
|-------------------|-----------------------------|---------------------------------------|-----------------------|------------------------|
| **CuSO₄ • 5 H₂O** | 159.61 | 18.02 x 5 = 90.10 | | |
| **MgSO₄ • 7 H₂O** | | | | |
| **CaSO₄ • 2 H₂O** | | | | |
**Instructions:**
- Fill in the table using the provided masses.
- Calculate the percent water content for each hydrate using the formula:
\[ \text{Percent H}_2\text{O} = \left(\frac{\text{Mass of H}_2\text{O in Hydrate}}{\text{Mass of Hydrate}}\right) \times 100 \]
**Note:**
Ensure to show all your work below for the calculations in the table.
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