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CHEM 433 - 11/27/10

CHEM 433 - 11/27/10. III. 2 nd Law of THERMO • “Machinery” - Finish last bit of the “dU story” ( p T ) - Properties of dG ( 3.9 ) • P & T Dependence of the Gibbs Energy (3.9): - T dependence READ: FINISH CHAPTER 3.

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CHEM 433 - 11/27/10

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  1. CHEM 433 - 11/27/10 III. 2nd Law of THERMO • “Machinery” - Finish last bit of the “dU story” (pT) - Properties of dG (3.9) • P & T Dependence of the Gibbs Energy (3.9): - T dependence READ: FINISH CHAPTER 3

  2. P 3.37:rG° of sucrose “combustion”: Is there an advantage to metabolism at 37°C vs. 25°C? Why? C12H22O11 + __ O2 —> 12 CO2 + 11 H2O “Is …” —> Calculate rG° at 310K. rH° = -5645 kJ/mol rG° = -6333 kJ/mol “Why?”—> Is rS° + or - for this reaction?

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