Write the name of cell which …
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Yogita Ingle 7 years ago
A mercury battery, used for hearing aids and electric watches, delivers a constant voltage of 1.35 V for long periods.
The half-reactions are
H2O (S) + H2O(l) + 2e-1 → Hg(l) + 2OH- (aq)
Zn (s) + 2OH-1 (aq) → Zn(OH)2 (s) + 2e-
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