Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define entropy in your own words.
π‘ Hint: Think about how the arrangement of particles changes.
Question 2
Easy
What happens to the entropy when a solid melts?
π‘ Hint: Remember phase changes.
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Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does ΞG < 0 indicate?
- The reaction is not spontaneous
- The reaction is spontaneous
- The system is at equilibrium
π‘ Hint: Think about what spontaneity means in thermodynamics.
Question 2
True or False: The entropy of a gas is lower than that of a solid.
- True
- False
π‘ Hint: Consider the arrangement of particles in different states.
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Challenge Problems
Push your limits with challenges.
Question 1
Calculate the change in Gibbs free energy at 298 K for the reaction where ΞH = -150 kJ and ΞS = 0.4 kJ/K. Is this reaction spontaneous?
π‘ Hint: Ensure all units are consistent.
Question 2
Given that the melting point of ice is 0 Β°C, show the calculation of equilibrium temperature based on the values of ΞH and ΞS for the phase change. Could it be spontaneous below 0 Β°C?
π‘ Hint: Watch out for unit conversions when computing.
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