1.

Give electrode reactions of mercury cell. Give its uses.

Answer»

Solution :At anode
`Zn(s)+2OH^(-)(aq)toZnO_((s))+H_(2)O_((l))+2e`
At CATHODE
`HgO_((g))+H_(2)O_((l))+2etoHg_((l))+2OH_(aq)^(-)`
Uses. : (i) This CELL GIVES a CONSTANT voltage of 1.35 V.
(ii) It is a compact cell.


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