Chemistry 208 Lab Report 8

Chemistry 208 Lab Report 8 - Thermodynamics of...

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Thermodynamics of Electrochemical Cells YtJ Mike Zettel May 3, 2005
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Abstract: This experiment examined the standard cell potential as a function of temperature for a galvanic cell. By comparing the standard cell potentials, it was determined that increasing the temperature lowered the standard cell potential. Introduction: This experiment sought to measure standard cell potentials at different temperatures. Also, this experiment could also be used to find thermodynamic values. Since ln cell RT E K nF o , the equilibrium constant could be found through simple mathematic calculations. Moreover, since cell G nFE   o & ΔG = -RTlnK, other thermodynamic values could be found since ΔG = ΔH – TΔS. Relating these equations, it was found that: ln H S K RT R   . So, performing this experiment could lead to finding values for enthalpy and entropy by plotting the graph of lnK versus the inverse temperature. After
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