4.4 - HL: Entropy and Gibbs Free Energy
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Practice Questions
Test your understanding with targeted questions
Define entropy in your own words.
💡 Hint: Think about how the arrangement of particles changes.
What happens to the entropy when a solid melts?
💡 Hint: Remember phase changes.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does ΔG < 0 indicate?
💡 Hint: Think about what spontaneity means in thermodynamics.
True or False: The entropy of a gas is lower than that of a solid.
💡 Hint: Consider the arrangement of particles in different states.
1 more question available
Challenge Problems
Push your limits with advanced challenges
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.
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.
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