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Chemistry, 7/e
Raymond Chang, Williams College

Entropy, Free Energy, and Equilibrium

Internet Exercises

course animations
(http://ull.chemistry.uakron.edu/genobc/)

  1. Go to the course animations list at http://ull.chemistry.uakron.edu/genobc/. Download number 39 on diffusion, and answer the questions after watching the movie.
    1. When the barrier is released, does entropy increase or decrease? Is that a positive or negative change?
    2. Will the molecules ever spontaneously separate back to how they were initially? What law of thermodynamics does this obey?
chemical thermodynamics
(http://www.chem.sc.edu/GOODE/C112Web/Ch17nf/index.htm)

  1. Scott R. Goode and Edward E. Mercerof the University of South Carolina produce a site on chemical thermodynamics at http://www.chem.sc.edu/GOODE/C112Web/Ch17nf/index.htm. Click through the slides to answer questions below.
    1. What can you conclude about free energy of a system?
    2. Is the freezing of water exothermic or endothermic? What is DG?
    3. How is the standard free energy related to K, the equilibrium constant?