Problem: Which of the value of Q is most reasonable as you throw your dead alkaline battery into the recycling bin?1) 10402) 13) 10-404) 405) -40

FREE Expert Solution

We are asked to calculate for the most reasonable value of Q as you throw your dead alkaline battery into the recycling bin


Recall that the Nernst Equation relates the concentrations of compounds and cell potential.

Ecell=E°cell-(0.05916 Vn) log Q

Ecell = cell potential under non-standard conditions
cell = standard cell potential
n = mole e- transferred
Q = reaction quotient = products/reactants


The half-reactions in an alkaline battery are:

Zn(s) + 2 OH(aq) → ZnO(s) + H2O(l) + 2 e

2 MnO2(s) + H2O(l) + 2 e → Mn2O3(s) + 2 OH(aq)

Overall reaction:

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Problem Details

Which of the value of Q is most reasonable as you throw your dead alkaline battery into the recycling bin?

1) 1040

2) 1

3) 10-40

4) 40

5) -40