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Free energy, entropy, thermodynamics

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Please help answer the following questions. See the attached file for multiple choice options.

1. Which sample of sulfur at 25°C has the greatest entropy?
2. What is the standard free energy change for the following reaction at 25°C: C(diamond) ---> C(graphite)
3. Which sample of H2O has the least entropy?
4. Which substance at 25°C is more stable, diamond or graphite?
5. Predict which of the following reactions has a positive entropy change.

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https://brainmass.com/chemistry/energetics-and-thermodynamics/free-energy-entropy-thermodynamics-416967

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1) Which sample of sulfur at 25°C has the greatest entropy?

Since it is the lightest and thus will have the most random motion, S (answer D) should be the most correct. S8 would have the lowest entropy since it is most constrained by many bonds.

2) What is the standard free energy change for the following reaction at 25°C: C(diamond) ---> C(graphite)

Using the table from this website ...

Solution Summary

This solution helps answer various questions regarding energetics and thermodynamics. Concepts covered include: entropy, standard free energy, and substance stability.

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