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Calcium sulfate (CaSO4) is insoluble in water. It is calculated that AH for solution is about zero. What is the sign of AS for the solution and why? 1. AS is positive. 2. AS is negative. Because 3. Mixing CaSO4 with water increases the number of possible arrangements. 4. Water molecules have fewer possible arrangements when Ca²+ and SO4²- ions are in solution due to being held tightly by strong ion-dipole interactions. 5. Water molecules exchange easily with those in the solvation shell. O2 and 3 O2 and 5 1 and 4 O2 and 4 O1 and 3 1 and 5

Calcium sulfate (CaSO4) is insoluble in water. It is calculated that AH for solution is about zero. What is the sign of AS for the solution and why? 1. AS is positive. 2. AS is negative. Because 3. Mixing CaSO4 with water increases the number of possible arrangements. 4. Water molecules have fewer possible arrangements when Ca²+ and SO4²- ions are in solution due to being held tightly by strong ion-dipole interactions. 5. Water molecules exchange easily with those in the solvation shell. O2 and 3 O2 and 5 1 and 4 O2 and 4 O1 and 3 1 and 5

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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Calcium sulfate (CaSO4) is insoluble in water. It is calculated that AH for solution is about zero. What is the sign of AS for the solution and why? 1. AS is positive. 2. AS is negative. Because 3. Mixing CaSO4 with water increases the number of possible arrangements. 4. Water molecules have fewer possible arrangements when Ca²+ and SO4²- ions are in solution due to being held tightly by strong ion-dipole interactions. 5. Water molecules exchange easily with those in the solvation shell. O2 and 3 O2 and 5 1 and 4 O2 and 4 0 1 and 3 O 1 and 5
Transcribed Image Text:Calcium sulfate (CaSO4) is insoluble in water. It is calculated that AH for solution is about zero. What is the sign of AS for the solution and why? 1. AS is positive. 2. AS is negative. Because 3. Mixing CaSO4 with water increases the number of possible arrangements. 4. Water molecules have fewer possible arrangements when Ca²+ and SO4²- ions are in solution due to being held tightly by strong ion-dipole interactions. 5. Water molecules exchange easily with those in the solvation shell. O2 and 3 O2 and 5 1 and 4 O2 and 4 0 1 and 3 O 1 and 5
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Step 1: Entropy

Entropy is the degree of disorder. As more randomly or disordered a substance is, its entropy will increase.

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