Question

# The hydrogen electrode potential depends on:

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

Solution

## The correct option is D nature of the metal used as cathode and the$$P^{H}$$ of the solutionThe 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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