Practice Hl: Relationship Between Δg And K (6.4)

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6 sample questions

Question 1.
Define Gibbs Free Energy (ΔG).
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Think about spontaneity in reactions.
Question 2.
What does a negative ΔG° indicate?
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Remember the sign indicates favorability.
3Question 3.
What does a negative ΔG° tell us about equilibrium constant K?
- K < 1
- K = 1
- K > 1
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Think about the reaction's direction.
4Question 4.
True or False: When ΔG° is positive, K is usually less than 1.
- True
- False
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Recall the definitions of positive and negative ΔG.
Question 5.
Consider a reaction where ΔH° = -100 kJ/mol and ΔS° = 200 J/mol·K. Evaluate ΔG° at 300 K and determine if the reaction will be spontaneous based on K.
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Use the formulas carefully and remember to convert units!
Question 6.
A system has ΔG° = 5 kJ/mol at 298 K. What would be the equilibrium constant K? Is the reaction spontaneous?
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Pay attention to signs when calculating K!

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