Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Question
**Problem Statement:** Determine ΔG for the phase change \( \text{N}_2 + 3\text{H}_2 \rightarrow 2 \text{NH}_3 \) at 25°C. **Given Data:** - ΔH° = -80 kJ/mol - ΔS = +100 J/mol·K **Note:** - The problem requires you to calculate the Gibbs free energy change (ΔG) for the given reaction at 25°C. - Remember to convert all units appropriately, such as converting ΔS from J to kJ when calculating ΔG using the formula: ΔG = ΔH - TΔS.
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Transcribed Image Text:**Problem Statement:** Determine ΔG for the phase change \( \text{N}_2 + 3\text{H}_2 \rightarrow 2 \text{NH}_3 \) at 25°C. **Given Data:** - ΔH° = -80 kJ/mol - ΔS = +100 J/mol·K **Note:** - The problem requires you to calculate the Gibbs free energy change (ΔG) for the given reaction at 25°C. - Remember to convert all units appropriately, such as converting ΔS from J to kJ when calculating ΔG using the formula: ΔG = ΔH - TΔS.
Expert Solution
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Step 1 Introduction interpretation

Interpretation - 

To determine the ∆G for the phase change for the given reaction N2    +    3H2     →  2NH3  

 

Concept- 

∆G which is known as gibbs free energy , so to determine this gibbs free energy for phase change when enthalpy of reaction ( ∆H ) and (∆S ) are given so here is a relation that is - 

                  

                                                                    ∆G = ∆H - T∆S 

 

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