2. Consider the reaction: 4 NH3(g) + 5 O2 (g) → 4 NO (g) + 6 H₂O (g) Substance NH3 (9) O₂ (g) NO (g) H₂O (g) AH (kJ/mol) -46 0 90 -242 sº (J/Kmol) 193 205 211 189 Calculate AG at 298 K using AHxn and ASxn "xn AG (kJ/mol) -17 0 87 -229

Chemistry
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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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**Reaction and Thermodynamic Data**

**2. Consider the reaction:**

\[ 4 \text{NH}_3 \, (g) + 5 \text{O}_2 \, (g) \rightarrow 4 \text{NO} \, (g) + 6 \text{H}_2\text{O} \, (g) \]

**Table of Thermodynamic Properties:**

| Substance | \( \Delta H_f^\circ \) (kJ/mol) | \( S^\circ \) (J/Kmol) | \( \Delta G_f^\circ \) (kJ/mol) |
|-----------|------------------|----------------|------------------|
| \(\text{NH}_3 \, (g)\) | -46             | 193            | -17               |
| \(\text{O}_2 \, (g)\)  | 0               | 205            | 0                 |
| \(\text{NO} \, (g)\)   | 90              | 211            | 87                |
| \(\text{H}_2\text{O} \, (g)\) | -242            | 189            | -229              |

**Instructions:**

Calculate \( \Delta G_{rxn}^\circ \) at 298 K using \( \Delta H_{rxn}^\circ \) and \( \Delta S_{rxn}^\circ \).
Transcribed Image Text:**Reaction and Thermodynamic Data** **2. Consider the reaction:** \[ 4 \text{NH}_3 \, (g) + 5 \text{O}_2 \, (g) \rightarrow 4 \text{NO} \, (g) + 6 \text{H}_2\text{O} \, (g) \] **Table of Thermodynamic Properties:** | Substance | \( \Delta H_f^\circ \) (kJ/mol) | \( S^\circ \) (J/Kmol) | \( \Delta G_f^\circ \) (kJ/mol) | |-----------|------------------|----------------|------------------| | \(\text{NH}_3 \, (g)\) | -46 | 193 | -17 | | \(\text{O}_2 \, (g)\) | 0 | 205 | 0 | | \(\text{NO} \, (g)\) | 90 | 211 | 87 | | \(\text{H}_2\text{O} \, (g)\) | -242 | 189 | -229 | **Instructions:** Calculate \( \Delta G_{rxn}^\circ \) at 298 K using \( \Delta H_{rxn}^\circ \) and \( \Delta S_{rxn}^\circ \).
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