A mercury battery, used for hearing aids and electric watches, delivers a constant voltage (1.35 V) for
Question:
HgO(s) + H2O(l) + 2e → Hg(l) + 2OH (aq)
Zn(s) + 2OH (aq) → Zn(OH)2(s) + 2e
Which half-reaction occurs at the anode and which occurs at the cathode? What is the overall cell reaction?
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