lecture12_042707 - Chem 008, Lecture 12 Announcements Last...

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Chem 008, Lecture 12 Announcements Last 008 class on May 6 th not a review class Study period hours are from 5/6 – 5/9 posted by 5/2 on Blackboard Be sure to complete 60 minutes of office hours share with 058 and 057 classes Course evaluations at end of class
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Galvanic cells Create a galvanic cell from PdCl 4 - /Pd and Cd/Cd 2+ . PdCl 4 - (aq) + 3e - → Pd (s) + 4Cl - (aq) E° = 0.787 V Cd 2+ (aq) + 2e - → Cd (s) E° = -0.403 V a) In the cell, what gets reduced and what gets oxidized? b) What is the overall cell reaction and standard line notation? c) What is the complete cell diagram?
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E° and thermodynamics Given the redox reaction 10Br - (aq) + 2MnO 4 - (aq) + 16H + (aq) → 2Mn 2+ (aq) + 8H 2 O (l) + 5Br 2 (l) What is E° cell , G°, K eq , and does the reaction got to completion? (look up the half reactions) cell = 0.165 V G° = -159 kJ K eq = 7.4 x 10 27
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The Nernst Equation What is the minimum [Ag + ] required to keep a cell spontaneous if [Sn 2+ ] is 1.0 M for the
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lecture12_042707 - Chem 008, Lecture 12 Announcements Last...

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