A hydrogen gas electrode is made at 25^@...

A hydrogen gas electrode is made at `25^@ C` by dipping platinum wire in aqueous HCl solution of pH = 4 and by passing hydrogen gas at one atmosphere. The reduction potential of the electrode at `25^@ C` will be

`(+ 0.118 V)`

`(- 0.236 V)`

`(+ 0.059 V)`

`(- 0.118 V)`

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