J & K CET Engineering J and K - CET Engineering Solved Paper-2008

  • question_answer
    The relationship between Gibbs' free energy change\[(\Delta G)\]and emf\[(E)\]of a reversible electrochemical cell is given by

    A) \[\Delta G=nFE\]

    B)  \[\Delta G=nF/E\]

    C)  \[\Delta G=-nFE\]

    D)  \[\Delta G=E/nF\]

    Correct Answer: C

    Solution :

     The Gibb's free energy change \[\Delta G\]and emf \[({{E}^{o}})\]of a reversible electrochemical cell are related by the following expression. \[\Delta G=-nFE_{cell}^{o}\] or \[=-nFE\]


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