Cell Potentials under Standard Conditions
Chapter , Problem 40E(choose chapter or problem)
Problem 40E
Cell Potentials under Standard Conditions (Section)
Given the following half-reactions and associated standard reduction potentials:
AuBr4-(aq) + 3 e-→Au(s) + 4 Br-(aq) E°red = -0.858 V
Eu3+(aq) + e-→Eu2+(aq) E°red = -0.43 V
IO-(aq) + H2O(l) + 2 e-→I-(aq) + 2 OH-(aq) E°red = +0.49 V
(a) Write the equation for the combination of these half-cell reactions that leads to the largest positive emf and calculate the value. (b) Write the equation for the combination of half cell reactions that leads to the smallest positive emf and calculate that value.
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