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Chemistry

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Explain with reference to the Nernst equation, how is it possible for a cell to have a positive cell potential understandard conditions but the negative cell potential under other conditions.

  • Chemistry - ,

    The Nernst equation is
    Ecell = Eocell + (0.05916/n)*log(reduced/oxidized)
    As the concn changes, the reduced form and oxidized form changes, that changes the log and adds or subtracts from Eocell. By adding and/or subtracting from Eocell with concn, it is possible to make the cell "go the other direction," meaning it changes sign.

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