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The hydrogen electrode is dipped in a so...

The hydrogen electrode is dipped in a solution of pH=3 at `25^@`C. What is the potential of the electrode?

A

0.177 g

B

0.087 g

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)`
`E=E^(@)-(0.059)/(1) log. (1)/([H^(+)])`
`= 0-(0.059)/(1) log. (1)/(10^(-3))`
`= -0.177V`
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