Homework Help is Here – Start Your Trial Now!
Science
Chemistry
Which substance is expected to have the lowest freezing point and which one the highest boiling point: 2.9m aqueous sucrose solution, 2.9m aqueous calcium sulfate solution, 2.9m aqueous ammonium sulfate solution? Explain.

Which substance is expected to have the lowest freezing point and which one the highest boiling point: 2.9m aqueous sucrose solution, 2.9m aqueous calcium sulfate solution, 2.9m aqueous ammonium sulfate solution? Explain.

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...
See similar textbooks
icon
Related questions
Question
**Question:** Which substance is expected to have the lowest freezing point and which one the highest boiling point: 2.9m aqueous sucrose solution, 2.9m aqueous calcium sulfate solution, 2.9m aqueous ammonium sulfate solution? Explain. **Explanation:** To determine the freezing and boiling points of these solutions, the concept of colligative properties can be applied. Colligative properties depend on the number of solute particles in a solution. The more particles present, the greater the effect on the freezing point depression and boiling point elevation. 1. **Sucrose (C₁₂H₂₂O₁₁):** Does not dissociate in water, so it remains as one particle. Thus, a 2.9m sucrose solution has 2.9 particles per kg of water. 2. **Calcium Sulfate (CaSO₄):** Dissociates into two ions: Ca²⁺ and SO₄²⁻. For a 2.9m solution, there are approximately 5.8 particles per kg of water. 3. **Ammonium Sulfate ((NH₄)₂SO₄):** Dissociates into three ions: 2 NH₄⁺ and 1 SO₄²⁻. A 2.9m solution yields about 8.7 particles per kg of water. **Conclusion:** - **Lowest Freezing Point:** Ammonium sulfate solution has the most particles, causing the greatest depression of freezing point. - **Highest Boiling Point:** Ammonium sulfate solution will also have the highest boiling point elevation due to the highest particle count.
Transcribed Image Text:**Question:** Which substance is expected to have the lowest freezing point and which one the highest boiling point: 2.9m aqueous sucrose solution, 2.9m aqueous calcium sulfate solution, 2.9m aqueous ammonium sulfate solution? Explain. **Explanation:** To determine the freezing and boiling points of these solutions, the concept of colligative properties can be applied. Colligative properties depend on the number of solute particles in a solution. The more particles present, the greater the effect on the freezing point depression and boiling point elevation. 1. **Sucrose (C₁₂H₂₂O₁₁):** Does not dissociate in water, so it remains as one particle. Thus, a 2.9m sucrose solution has 2.9 particles per kg of water. 2. **Calcium Sulfate (CaSO₄):** Dissociates into two ions: Ca²⁺ and SO₄²⁻. For a 2.9m solution, there are approximately 5.8 particles per kg of water. 3. **Ammonium Sulfate ((NH₄)₂SO₄):** Dissociates into three ions: 2 NH₄⁺ and 1 SO₄²⁻. A 2.9m solution yields about 8.7 particles per kg of water. **Conclusion:** - **Lowest Freezing Point:** Ammonium sulfate solution has the most particles, causing the greatest depression of freezing point. - **Highest Boiling Point:** Ammonium sulfate solution will also have the highest boiling point elevation due to the highest particle count.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
SEE MORE TEXTBOOKS