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Describe the composition of anode and cathode in a mercury cell. Write the electrode reactions for this cell. |
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Answer» Solution :Mercury cell: It consists of zinc mercury amalgam as anode, a paste of HGO and CARBON black is USED as cathode. The electrolyte is a paste of KOH and ZnO. At anode : Zn (amalgam) + `2OH^(-) to ZnO(s) + H_2O(l) + 2e^(-)` At cathode : `HgO(s) to ZnO(s) + HG(l)`. |
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