The standard oxidation potential of `Ni//Ni^(2+)` electrode is `0.236V`. If this is combined with a hydrogen electrode in acid solution. At what pH of the solution will the measured emf be zero at `25^(@)C` ? Assume `[Ni^(2+)]=1M` and `p_(H_(2))=1` atm

The standard oxidation potential of `Ni//Ni^(2+)` electrode is `0.236V

1.	The standard oxidation potential of `Ni//Ni^(2+)` electrode is `0.236V`. If this is combined with a hydrogen electrode in acid solution. At what pH of the solution will the measured emf be zero at `25^(@)C` ? Assume `[Ni^(2+)]=1M` and `p_(H_(2))=1` atm
Answer» Correct Answer - 4 `{:(Ni rarr Ni^(2+) + 2e ,E_(OP)^(@) = 0.236V),(2H^(+) +2e rarr H_(2),E_(RP)^(@) = 0):}` `:. E_(cell)^(@) = 0` `:. E_(cell)^(@) + (0.059)/(2) log_(10).([H^(+2)]^(2))/([Ni^(2+)])` or `-log H^(+) = 4 :. pH = 4`

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The standard oxidation potential of `Ni//Ni^(2+)` electrode is `0.236V`. If this is combined with a hydrogen electrode in acid solution. At what pH of the solution will the measured emf be zero at `25^(@)C` ? Assume `[Ni^(2+)]=1M` and `p_(H_(2))=1` atm

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