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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define entropy in your own words.
💡 Hint: Think about how the arrangement of particles changes.
Question 2
Easy
What happens to the entropy when a solid melts?
💡 Hint: Remember phase changes.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does ΔG < 0 indicate?
- The reaction is not spontaneous
- The reaction is spontaneous
- The system is at equilibrium
💡 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
💡 Hint: Consider the arrangement of particles in different states.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Calculate the change in Gibbs free energy at 298 K for the reaction where ΔH = -150 kJ and ΔS = 0.4 kJ/K. Is this reaction spontaneous?
💡 Hint: Ensure all units are consistent.
Question 2
Given that the melting point of ice is 0 °C, show the calculation of equilibrium temperature based on the values of ΔH and ΔS for the phase change. Could it be spontaneous below 0 °C?
💡 Hint: Watch out for unit conversions when computing.
Challenge and get performance evaluation