Practice Spontaneity (5.6) - Thermodynamics

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6 sample questions

Question 1.
Define spontaneity in your own words.
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Think about processes that happen without needing intervention.
Question 2.
What does an increase in entropy indicate about a system?
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Consider states of matter—how do solids compare to liquids?
3Question 3.
What does it mean when ΔG < 0?
- The process is spontaneous
- The process is non-spontaneous
- The reaction requires energy
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Recall the Gibbs Free Energy equation.
4Question 4.
Entropy can be understood as a measure of what?
- Disorder
- Order
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Is higher entropy associated with more or less organization?
Question 5.
How does an increase in temperature affect the spontaneity of reactions that have a positive change in entropy?
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Consider the relationship between temperature and entropy in the Gibbs equation.
Question 6.
A reaction has ΔH = -60 kJ and ΔS = -200 J/K. Calculate the temperature at which this reaction would be spontaneous.
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What happens to spontaneity when ΔH and ΔS are both negative?

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