Q.

The potential of hydrogen electrode in contact with a solution whose pH is equal to 10 is

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a

-0.0591 

b

0.0591

c

0.591

d

-0.591

answer is C.

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Detailed Solution

[H+]=1010
2H++2eH2(1atm)
Ered=E°red0.05911log1[H+]
E=0.0591(pH)
ERed=0.0591×10=0.591V

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