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MGIMS WARDHA MGIMS WARDHA Solved Paper-2009

  • question_answer
    The standard emf of a cell, involving one electron change is found to be 0.591 V at\[25{}^\circ C\]. The equilibrium constant of the reaction is (\[F=96500\text{ }C\text{ }mo{{l}^{-1}},\text{ }R=8.314\text{ }J{{K}^{-1}}mo{{l}^{-1}}\])

    A) \[1.0\times {{10}^{1}}\]                                

    B) \[1.0\times {{10}^{5}}\]

    C) \[1.0\times {{10}^{10}}\]                             

    D) \[1.0\times {{10}^{30}}\]

    Correct Answer: C

    Solution :

                     \[E_{cell}^{o}=\frac{0.0591}{n}\log K\] \[0.591=\frac{0.0591}{1}\log K\]                 \[K=1\times {{10}^{10}}\]


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