The Following Half-Reactions Occur in the Mercury Battery Used in Calculators

question 79

Multiple Choice

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)

• A) 9.4 × 10²²
• B) 7.5 × 10⁴⁵
• C) 6.4 × 10⁶³
• D) 7.8 × 10⁹¹
• E) > 9.9 × 10⁹⁹

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Capital Intensity Ratio

A measure of how much capital is needed in relation to labor to produce a given level of output.

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