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From the following list, chose the best answer to the questions. 0.2 M H2SO4 0.1 M C12H2201 (Lactose) 0.2 M Naci 0.1 M MgCl2 0.25 M NH3 Which solution will have the highest boiling point? H2S04

From the following list, chose the best answer to the questions. 0.2 M H2SO4 0.1 M C12H2201 (Lactose) 0.2 M Naci 0.1 M MgCl2 0.25 M NH3 Which solution will have the highest boiling point? H2S04

Chemistry
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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### Boiling and Freezing Points of Various Solutions #### Given Solutions: - 0.2 M H₂SO₄ (Sulfuric Acid) - 0.1 M C₁₂H₂₂O₁₁ (Lactose) - 0.2 M NaCl (Table Salt) - 0.1 M MgCl₂ (Magnesium Chloride) - 0.25 M NH₃ (Ammonia) ### Questions and Best Answers: **Question 1: Which solution will have the highest boiling point?** - *Best Answer: H₂SO₄* **Question 2: Which solution will have the lowest boiling point?** - *Best Answer: C₁₂H₂₂O₁₁* **Question 3: Which solution will have the highest freezing point?** - *Best Answer: H₂SO₄* (Note: It is indicated as incorrect in the image) **Question 4: Which solution will have the lowest freezing point?** - *Best Answer: C₁₂H₂₂O₁₁* ### Explanation: #### Boiling Point Elevation and Freezing Point Depression: *Boiling point elevation and freezing point depression are colligative properties. These properties depend on the number of solute particles in solution, not the identity of the solute. The greater the number of particles in solution, the higher the boiling point and the lower the freezing point.* #### Detailed Analysis: 1. **H₂SO₄ (Sulfuric Acid)**: - Dissociates into 3 ions (2 H⁺ and SO₄²⁻). - 0.2 M results in a high number of particles in solution, leading to a higher boiling point. 2. **C₁₂H₂₂O₁₁ (Lactose)**: - Does not dissociate into ions in solution. - Lower number of particles. Therefore, it has the lowest effect on both boiling and freezing points. 3. **NaCl (Table Salt)**: - Dissociates into 2 ions (Na⁺ and Cl⁻). - Results in a moderate number of particles. 4. **MgCl₂ (Magnesium Chloride)**: - Dissociates into 3 ions (Mg²⁺ and 2 Cl⁻). - Similar
Transcribed Image Text:### Boiling and Freezing Points of Various Solutions #### Given Solutions: - 0.2 M H₂SO₄ (Sulfuric Acid) - 0.1 M C₁₂H₂₂O₁₁ (Lactose) - 0.2 M NaCl (Table Salt) - 0.1 M MgCl₂ (Magnesium Chloride) - 0.25 M NH₃ (Ammonia) ### Questions and Best Answers: **Question 1: Which solution will have the highest boiling point?** - *Best Answer: H₂SO₄* **Question 2: Which solution will have the lowest boiling point?** - *Best Answer: C₁₂H₂₂O₁₁* **Question 3: Which solution will have the highest freezing point?** - *Best Answer: H₂SO₄* (Note: It is indicated as incorrect in the image) **Question 4: Which solution will have the lowest freezing point?** - *Best Answer: C₁₂H₂₂O₁₁* ### Explanation: #### Boiling Point Elevation and Freezing Point Depression: *Boiling point elevation and freezing point depression are colligative properties. These properties depend on the number of solute particles in solution, not the identity of the solute. The greater the number of particles in solution, the higher the boiling point and the lower the freezing point.* #### Detailed Analysis: 1. **H₂SO₄ (Sulfuric Acid)**: - Dissociates into 3 ions (2 H⁺ and SO₄²⁻). - 0.2 M results in a high number of particles in solution, leading to a higher boiling point. 2. **C₁₂H₂₂O₁₁ (Lactose)**: - Does not dissociate into ions in solution. - Lower number of particles. Therefore, it has the lowest effect on both boiling and freezing points. 3. **NaCl (Table Salt)**: - Dissociates into 2 ions (Na⁺ and Cl⁻). - Results in a moderate number of particles. 4. **MgCl₂ (Magnesium Chloride)**: - Dissociates into 3 ions (Mg²⁺ and 2 Cl⁻). - Similar
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