Subjective Type

Write the name of cell which is generally used in hearing aids . Write the reactions taking place at the anode and the cathode of this cell .

Solution

Mercury cell

At anode : $$ Zn (Hg) + 2OH^- \rightarrow ZnO (s) + H_2O + 2e^- $$

At cathode : $$ HgO (s) + H_2O + 2e^- \rightarrow Hg(l) + 2OH^- $$

$$ Zn(Hg) + HgO (s) \rightarrow ZnO (s) + Hg(l) $$

SIMILAR QUESTIONS

Electrochemistry

Cathode is made up of ______ in mercury battery.

Electrochemistry

Which of the following is disposable battery?

Electrochemistry

For the given cells : Lead storage cell , Mercury cell , Fuel cell and Dry cell Answer the following : Which cell is used in hearing aids ?

Electrochemistry

Why does the cell potential of mercury cell remain constant throughout its life ?

Electrochemistry

Unlike dry cell, the mercury cell has a constant cell potential throughout its useful life. Why?

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