þetermine the values of AH', AS'and AG'for the following two reactions at 25 °C, using the data given in the table. Indicate if each of reactions is spontaneous or not Substance AH, (kJ/mol) S° (J/Kmol) AG (kJ/mol) H(g) 131 N2(9) NH,(g) 192 -46 193 -17 So,(g) -396 257 -371 H,0(1) -286 70 -237 H,SO,(aq) -909 20 -745 a. 3 H2(g) + N2 (g)-2 NH3(g) b. SO,(g) + H20(1) H,SO,(aq)

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**Determine the Values of ΔHᵣ°, ΔS° and ΔGᵣ° for Chemical Reactions**

The following table provides thermodynamic data for several substances, which can be used to calculate the standard enthalpy change (ΔHᵣ°), standard entropy change (ΔS°), and standard Gibbs free energy change (ΔGᵣ°) for two chemical reactions at 25°C. The spontaneity of each reaction is also determined based on these values.

| Substance   | ΔHᶠ° (kJ/mol) | S° (J/K∙mol) | ΔGᶠ° (kJ/mol) |
|-------------|---------------|--------------|---------------|
| H₂(g)       | 0             | 131          | 0             |
| N₂(g)       | 0             | 192          | 0             |
| NH₃(g)      | -46           | 193          | -17           |
| SO₃(g)      | -396          | 257          | -371          |
| H₂O(l)      | -286          | 70           | -237          |
| H₂SO₄(aq)   | -909          | 20           | -745          |

**Reactions:**

a. \( \text{3 H}_2(g) + \text{N}_2(g) \rightarrow \text{2 NH}_3(g) \)

b. \( \text{SO}_3(g) + \text{H}_2\text{O}(l) \rightarrow \text{H}_2\text{SO}_4(aq) \)

Use the data from the table to calculate the ΔHᵣ°, ΔS°, and ΔGᵣ° for each reaction, and determine if each reaction is spontaneous at 25°C.
Transcribed Image Text:**Determine the Values of ΔHᵣ°, ΔS° and ΔGᵣ° for Chemical Reactions** The following table provides thermodynamic data for several substances, which can be used to calculate the standard enthalpy change (ΔHᵣ°), standard entropy change (ΔS°), and standard Gibbs free energy change (ΔGᵣ°) for two chemical reactions at 25°C. The spontaneity of each reaction is also determined based on these values. | Substance | ΔHᶠ° (kJ/mol) | S° (J/K∙mol) | ΔGᶠ° (kJ/mol) | |-------------|---------------|--------------|---------------| | H₂(g) | 0 | 131 | 0 | | N₂(g) | 0 | 192 | 0 | | NH₃(g) | -46 | 193 | -17 | | SO₃(g) | -396 | 257 | -371 | | H₂O(l) | -286 | 70 | -237 | | H₂SO₄(aq) | -909 | 20 | -745 | **Reactions:** a. \( \text{3 H}_2(g) + \text{N}_2(g) \rightarrow \text{2 NH}_3(g) \) b. \( \text{SO}_3(g) + \text{H}_2\text{O}(l) \rightarrow \text{H}_2\text{SO}_4(aq) \) Use the data from the table to calculate the ΔHᵣ°, ΔS°, and ΔGᵣ° for each reaction, and determine if each reaction is spontaneous at 25°C.
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