
To find:
The overall ΔG0rxn value of the iron reduction reaction at

Answer to Problem 12.72QA
Solution:
Explanation of Solution
1) Formula:
i.
ii.
iii.
Here
2) Concept:
We can calculate the change in enthalpy that accompanies a chemical reaction under standard conditions,
The relation between Gibbs free energy (
Formation of carbon monoxide from coal as follow:
3) Given information:
4) Calculations:
Reduction of iron from coal is the overall reaction of the two reactions above.
To get the same number of moles of
Adding reactions (3) and (4), we are getting overall reaction:
The unit of
Calculation for
Calculation for
All units of
Calculation for
Conclusion:
Based on the values of
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Chapter 12 Solutions
Chemistry: An Atoms-Focused Approach
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