We will now assess the spontaneity of this runaway decomposition of ammonium nitrate using threemethods:Method 1: Entropy change of the universe (AS univ)AS univ=AS Rxn + AS surroundingsMethod 2: Change in Gibb's Free Energy (AG)AG=AH-TAS°Method 3: Change in Gibb's Free Energy from free energy of formation (AG)AGRxn = EnAGf, products - EnAG₁°, reactants6. Define spontaneity. What is the sign on AS univ for a spontaneous reaction? What is the sign onAG for a spontaneous reaction?7. Determine AS (in J K¹ mol¹ ) for the universe at 300°C.8. Determine AG° (in kJ mol-¹) at 300°C using Method 2.9. Determine AG (in kJ mol-¹) using Method 3.

Entropy is a measure of the degree of randomness of the system. Gibbs free energy is the measure of…

We will now assess the spontaneity of this runaway decomposition of ammonium nitrate using three methods: Method 1: Entropy change of the universe (AS°univ) AS univ=AS Rxn + AS surroundings Method 2: Change in Gibb's Free Energy (AG) AGAH-TAS° Method 3: Change in Gibb's Free Energy from free energy of formation (AGrº) AGRXnEnAG, products - EnAG, reactants 6. Define spontaneity. What is the sign on AS univ for a spontaneous reaction? What is the sign on AG for a spontaneous reaction? 7. Determine AS (in J K¹ mol¹ ) for the universe at 300°C. 8. Determine AG° (in kJ mol ¹) at 300°C using Method 2.

We will now assess the spontaneity of this runaway decomposition of ammonium nitrate using three methods: Method 1: Entropy change of the universe (AS°univ) AS univ=AS Rxn + AS surroundings Method 2: Change in Gibb's Free Energy (AG) AGAH-TAS° Method 3: Change in Gibb's Free Energy from free energy of formation (AGrº) AGRXnEnAG, products - EnAG, reactants 6. Define spontaneity. What is the sign on AS univ for a spontaneous reaction? What is the sign on AG for a spontaneous reaction? 7. Determine AS (in J K¹ mol¹ ) for the universe at 300°C. 8. Determine AG° (in kJ mol ¹) at 300°C using Method 2.

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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Question

We will now assess the spontaneity of this runaway decomposition of ammonium nitrate using three
methods:
Method 1: Entropy change of the universe (AS univ)
AS univ=AS Rxn + AS surroundings
Method 2: Change in Gibb's Free Energy (AG)
AG=AH-TAS°
Method 3: Change in Gibb's Free Energy from free energy of formation (AG)
AGRxn = EnAGf, products - EnAG₁°, reactants
6. Define spontaneity. What is the sign on AS univ for a spontaneous reaction? What is the sign on
AG for a spontaneous reaction?
7. Determine AS (in J K¹ mol¹ ) for the universe at 300°C.
8. Determine AG° (in kJ mol-¹) at 300°C using Method 2.
9. Determine AG (in kJ mol-¹) using Method 3.

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Step 1: Entropy and Gibbs free energy

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Step 2: Spontaneity and the sign of entropy

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Step 3: Decomposition of ammonium nitrate

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Step 4: Determination of entropy of reaction

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Step 5: Determination of entropy of surroundings

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Step 6: Determination of entropy of Universe

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