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)

Question

Quizplus · Accepted Answer

The reaction equation for option B shows that only the solid reactants NiO(OH) and Cd are being consumed to form Ni(OH)2 and Cd(OH)2 solids. The hydrogen ions (H+) and hydroxide ions (OH-) are only serving as spectator ions and are not being consumed or produced. Therefore, the cell potential E should remain constant with time until the solid reactants are almost completely consumed.

For a Particular Battery Based on One of the Following