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J & K CET Medical J & K - CET Medical Solved Paper-2005

  • question_answer
    For the feasibility of a redox reaction in a cell, the emf should be:

    A)  positive                              

    B)  fixed

    C)  zero                                     

    D)  negative

    Correct Answer: A

    Solution :

                                    For spontaneous reaction\[\Delta G\]should be negative. \[\Delta G=-nF{{E}^{o}}\] where, \[\Delta {{G}^{o}}=\]Free energy charge \[{{E}^{o}}=\]emf of the cell The value of\[\Delta {{G}^{o}}\]can be negative, if the value of\[{{E}^{o}}\]is positive.


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