NEET Chemistry Electrochemistry / विद्युत् रसायन Question Bank Self Evaluation Test - Electrochemistry

  • question_answer
    If the \[E{{{}^\circ }_{cell}}\] for a given reaction has a negative value, then which of the following gives the correct relationships for the values of \[\Delta G{}^\circ \] and \[{{K}_{eq}}\] ?

    A) \[\Delta G{}^\circ >0;{{K}_{eq}}>1\]  

    B) \[\Delta G{}^\circ <0;\,\,{{K}_{eq}}>1\]

    C) \[\Delta G{}^\circ <0;\,\,{{K}_{eq}}<1\]

    D) \[\Delta G{}^\circ >0;\,\,{{K}_{eq}}<1\]

    Correct Answer: D

    Solution :

    [d] Standard Gibbs free energy is given as \[\Delta G{}^\circ =-nE{}^\circ F\] If \[E{{{}^\circ }_{cell}}<0\,i.e.-ve\] \[\Delta G{}^\circ >0\] Further \[\Delta G{}^\circ =-RT\ell n\,{{K}_{eq}}\]


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