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The value of (E(H(2)O)//H(2)^(@)) (1atm)...

The value of `(E_(H_(2)O)//H_(2)^(@))` (1atm) Pt at 298K would b e

A

`+0.207`

B

`-0.414V`

C

`-0.207V`

D

`+0.414V`

Text Solution

Verified by Experts

The correct Answer is:
B
For pure water `[H^(+)]=10^(-7)M`
`H^(+)(aq)+e^(-)rarr1//2H_(2)`
`E=E^(@)-(0.0591V)/(1)"log "(1)/([H^(+)])`
`=0V-(0.0591V)/(1)"log"(1)/(10^(-7))`
`=-0.0591Vxx"log"10^(7)`
`=-0. 0591xx7V=-0.414V`
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