Question

In case of a standard hydrogen electrode
A) absolute electrode potential is not zero B) absolute electrode potential is zero C) both absolute and standard electrode potential values are zero D) electrode potential is zero only at 25 deg C

Answer 1

Answer:

Hydrogen is used as standard electrode and other electrodes potential is measured w.r.t. to hydrogen so potential of hydrogen is assumed to zero for standard measurements.

Explanation:

Because in cell complete redox(oxidation and reduction) reaction can be possible either reaction can not be done separately! So we can not measure single electrode's potential! ... The hydrogen electrode, under standard conditions, was chosen as the zero reference point.

Answer 2

Explanation:

B) is correct option.

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