ElectrochemistryHard
Question
The standard oxidation potentials, Eo, for the half reactions are as
Zn → Zn2+ + 2e- ; Eo = + 0.76 V → Fe → Fe2+ + 2e- ; Eo = + 0.41 V
The EMF for the cell :
Fe2+ + Zn → Zn2+ + Fe
Zn → Zn2+ + 2e- ; Eo = + 0.76 V → Fe → Fe2+ + 2e- ; Eo = + 0.41 V
The EMF for the cell :
Fe2+ + Zn → Zn2+ + Fe
Options
A.- 0.35 V
B.+ 0.35 V
C.+ 1.17 V
D.- 1.17 V
Solution
EMF = Eocathode - Eoanode = 0.76 - 0.41 = 0.35.
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