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Hydrogen electrode is

Answer»

reversible with respect to `H^(+)` IONS
a secondary reference electrode
an indicator electrode
IRREVERSIBLE with respect to `H^(+)` ions

SOLUTION :By definition , SHE is reversible with respect to `H^(+)` ions .
The oxidation reaction is = `(1)/(2) H_(2) to H^(+) + e^(-)`


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