Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Question

Use the thermodynamic data below to answer the following questions regarding this chemical reaction:

CH4(g) + H2O(g) ® 3 H2(g) + CO(g)

DfG° [CH4(g)] = –50.8 kJ/mol, DfG° [H2O(g)] = –228.6 kJ/mol, DfG° [H2(g)] = 0.0 kJ/mol, and DfG° [CO(g)] = –137.2 kJ/mol;

  1. Calculate the standard net Gibbs free energy change for the reaction as written.

 

2. Calculate the equilibrium constant in terms of Kp and Kc. (Note: DfG°’s given above relate to Kp, not Kc.

(R = 8.314 J/mol K = 0.08206 L atm/mol K)

 

3. Estimate the mol fraction of carbon monoxide (CO) at equilibrium? 

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Step 1: Thermodynamics and equilibrium constant
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Step 2: Calculating the standard net Gibbs free energy change for the reaction
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Step 3: Calculating he equilibrium constant in terms of Kp and Kc
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