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Show that SHE can act both as a anode as well as cathode. |
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Answer» Solution :(i) When it is placed on the right-hand side of the zinc electrode, the hydrogen electrode reaction is, `""2H^(+)+2E^(-) rarr H_(2)` The electrons flow to the SHE and it acts as the cathode. (ii) When the SHE is placed on the LEFT hand side, the electrode reaction is `""H_(2) rarr 2H^(+)+2e^(-)` The electrons flow to the copper electrode and the hydrogen electrode acts as the anode. |
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