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A huydrgen electrode is dipped is a solu...

A huydrgen electrode is dipped is a solution of `pH = 3.0` at ` 25^@C` The potential fo the cell will be .

A

` 0.177 V`

B

` 0.087 V`

C

` -0.177 V`

D

` 0.059 V`

Text Solution

Verified by Experts

The correct Answer is:
C
` H^+ + e^- rarr 1/2 H_2 (g)`
` E=E^2 - ( 0.059)/(n) log .(1)/((H^+)) =0- (0.059)/1 pH`
or `E=- 0.059 xx 3 0.177 V`.
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