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The standard reduction potential of the ...

The standard reduction potential of the half - cell:
`NO_(3)^(-)(aq)+2H^(+)+e rarr NO_(2)(g)+H_(2)O` is 0.78V.`
(2) What will be the reduction potential of the half - cell in neutral solution? Assume all other species has unit concentration.

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Reaction :
`NO_(3)^(-)(aq)+2H^(+)(aq)+e rarr NO_(2)(g)+H_(2)O(l)`
In neutral solution, `[H^(+)]=10^(-7)M`
`therefore" "E=0.78-(0.059)/(1)log.(1xx1)/(1xx(10^(-7))^(2))=-0.046V`
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