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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Use the graph to rank these solutes in order of increasing solubility, lowest (1) and highest (4) at 10 °C.
Question 7 options:
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KClO3
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NaNO3
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KNO3
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KI
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Transcribed Image Text:### Solubility of Various Substances in Water
This graph demonstrates the solubility of different solutes in water, measured as grams of solute per 100 grams of water, across a range of temperatures from 0°C to 100°C.
#### Key Observations:
1. **KI (Potassium Iodide):**
- Solubility increases significantly with temperature, starting at about 130 g at 0°C and rising to over 150 g at 100°C.
2. **NaNO₃ (Sodium Nitrate):**
- Solubility rises steeply from around 75 g at 0°C to about 130 g at 100°C.
3. **KNO₃ (Potassium Nitrate):**
- Shows a marked increase in solubility with temperature, from approximately 20 g at 0°C to around 90 g at 100°C.
4. **NH₃ (Ammonia):**
- Solubility decreases as temperature increases, starting at about 90 g at 0°C and dropping to around 30 g at 100°C.
5. **NH₄Cl (Ammonium Chloride):**
- Solubility increases steadily from about 30 g at 0°C to approximately 60 g at 100°C.
6. **KCl (Potassium Chloride):**
- The solubility curve shows a moderate increase from 30 g at 0°C to about 50 g at 100°C.
7. **NaCl (Sodium Chloride):**
- Solubility increases slightly, from roughly 35 g at 0°C to around 40 g at 100°C.
8. **KClO₃ (Potassium Chlorate):**
- Solubility rises slowly from about 5 g at 0°C to approximately 30 g at 100°C.
9. **Ce₂(SO₄)₃ (Cerium(III) Sulfate):**
- Exhibits a decrease in solubility with temperature, starting at about 20 g at 0°C and declining slightly.
#### Conclusion:
The graph highlights how the solubility of most solids increases with temperature. However, some substances like NH₃ and Ce₂(SO₄)₃ display decreasing solubility with rising temperatures. This information is crucial for understanding how temperature affects the behavior
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