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Question

The hydrogen electrode potential depends on:



A
nature of metal used as anode
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B
the PH of the solution
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C
both nature of the metal used as anode and
the PH of the solution
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D
nature of the metal used as cathode and the
PH of the solution
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Solution

The correct option is D nature of the metal used as cathode and the
$$P^{H}$$ of the solution
The standard hydrogen electrode is
$$H_2, Pt | H^+ (1  M)$$
$$pH=-log [H^+]$$
$$\therefore$$  If the conc. of $$H^+$$ (i.e. pH) of the solution or the metal is changed,
the electrode changes and the hydrogen electrode metal changes.
Hence, option D is correct.

Chemistry

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