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The following half-reactions occur in the mercury battery used in calculators. If Ecell = 1.357 V, calculate the equilibrium constant for the cell...

The following half-reactions occur in the mercury battery used in calculators. If E°cell = 1.357 V, calculate the equilibrium constant for the cell reaction at 25°C. (Assume the stoichiometric coefficients in the cell reaction are all equal to 1.)

HgO(s) + H2O(l) + 2e- Hg(l) + 2OH-(aq)
ZnO(s) + H2O(l) + 2e- Zn(s) + 2OH-(aq)

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