For a particular battery based on one of the following reactions,E is expected to remain constant with time until the cell reactants are almost completely consumed.Which is the appropriate reaction?
A) Zn(s) + 2 MnO2(s) + 2 NH4+(aq) → 2 NH3(aq) + Mn2O3(s) + Zn2+(aq) + H2O(l)
B) 2 NiO(OH) (s) + Cd(s) + 2 H2O(l) → 2 Ni(OH) 2(s) + Cd(OH) 2(s)
C) Pb(s) + PbO2(s) + 2 H+(aq) + 2 HSO4-(aq) → 2 PbSO4(s) + 2 H2O(l)
D) Zn(s) + Cu2+(aq) → Zn2+(aq) + Cu(s)
Correct Answer:
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