20. Electrochemistry
Cell Potential: The Nernst Equation
Multiple Choice
Multiple ChoiceDetermine [Fe2+] for the following galvanic cell at 25ºC if given [Sn2+] = 0.072 M, [Fe3+] = 0.0219 M, and [Sn4+] = 0.00345 M.
Sn2+ (aq) + 2 Fe3+ (aq) ⇌. Sn4+ (aq) + 2 Fe2+ (aq) Ecell = + 0.68 V
Standard Reduction Potentials
Sn4+ (aq) + 2 e– →. Sn2+ (aq) E°red = + 0.151 V
Fe3+ (aq) + e– → Fe2+ (aq) E°red = + 0.771 V
A
0.13150 M
B
0.00968 M
C
0.08180 M
D
0.01936 M
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