AP Chemistry Thermodynamics WS 0809

AP Chemistry Thermodynamics WS 0809 - AP Chemistry:...

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AP Chemistry: Thermodynamics AP Chemistry Thermodynamics WS 0809.doc Name: ___________________________________ Date: _______________________ Per: _____ 1. The following equation represents the essential change that takes place during the fermentation of glucose to ethanol: C 6 H 12 O 6(s) 2C 2 H 5 OH (l) + 2CO 2(g) Is Δ S o positive or negative? Explain. 2. Calculate the change of entropy, Δ S o , at 25.0 o C for the reaction in which urea is formed from NH 3 and CO 2 . 2NH 3(g) + CO 2(g) NH 2 CONH 2(aq) + H 2 O (l) The standard entropy of urea is 174 J/molK. See the text appendices for additional values. 3. Using values of Δ H o f and S o , calculate the standard free energy change, Δ G o , for the following reaction at 25.0 o C. N 2(g) + 3H 2(g) 2NH 3(g) 4. Using standard free energies of formation, calculate Δ G o for the combustion of 1 mol of ethanol, C 2 H 5 OH, at 25.0 o C. C
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This note was uploaded on 12/07/2011 for the course CHEM 100 taught by Professor Feebeck during the Fall '10 term at Purdue University-West Lafayette.

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AP Chemistry Thermodynamics WS 0809 - AP Chemistry:...

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