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Calculate the potential of hydrogen elec...

Calculate the potential of hydrogen electrode in contact with a solution whose pH is 10.

Text Solution

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* pH=`-log[H^(+)]=10 or log[H^(+)]=-10.0`
`therefore[H^(+)]="Antilog "(10)=1xx10^(10)M`
Reaction : `H^(+)(xM)+e^(-) to (1)/(2)H_(2(g))`
`therefore E_(cell)=E_(cell)^(Theta)-(0.059)/(n)"log"(1)/([H^(+)])`
`=0.0+(0.059)/(1)log[H^(+)]`
`=0.059(-10.0)`
`=0.59V`
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