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Unformatted text preview: quinone/hydroquinone, E = 0.700 V, E ' = 0.286 V. V. Potential of the saturated calomel electrode is +0.241 V. What is potential of a solution Page 1 of 2 Untitled Document 12/8/2010 https://courses.las.illinois.edu/file.php/173/Quant_Lect_EchemI.html containing 0.1 M Cu 2+ and 0.01 M Cu + , given E for Cu 2+ + e Cu + is 0.161 V? VI. Addition of energies to combine half-reactions. G = -RT ln K = - nFE . Demonstration: Cu 2+ + e Cu + is 0.161. Cu + + e Cu is 0.518 V. So what is E for Cu 2+ + 2e Cu? (Answer: 0.339 V). VII. In principle, potentiometry looks at activity, not concentration. Non-ideality: liquid junction potential. VIII. F = charge (in Coulombs) per mole = 96485.33. At 25C, ln(10) RT/F = ln(10)*8.31447 J/mol K * 298.15 K/96485.33 Coul/mol = 0.05916 J/Coul = 59.16 mV. Page 2 of 2 Untitled Document 12/8/2010 https://courses.las.illinois.edu/file.php/173/Quant_Lect_EchemI.html...
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