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26 November, 13:09

Calculate the standard cell potential (E∘) for the reaction X (s) + Y + (aq) →X + (aq) + Y (s) if K = 5.59*10-3.

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  1. 26 November, 13:30
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    E° = - 0.133 V

    Explanation:

    In the reaction:

    X (s) + Y⁺ (aq) → X⁺ (aq) + Y (s)

    1 electron is transferred from X to Y

    Now, using Nernst equation:

    E° = RT / nF ln K

    Where R is gas constant (8.314 J/molK), T is absolute temperature (Usually 298.15K), n are transferred electrons (1, for the reaction), F is faraday constant (96485C/mol) and K is equilibrium constant (5.59x10⁻³)

    Replacing:

    E° = 8.314 J/molK*298.15K / 96485C/mol*1 ln 5.59x10⁻³

    E° = - 0.133 V
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