BHU PMT BHU PMT (Mains) Solved Paper-2006

  • question_answer
    The\[\Delta {{G}^{o}}\]for the Daniell cell has been found to be\[-212.3\text{ }kJ\]at\[25{}^\circ C\]. Calculate the equilibrium constant for the cell reaction.

    A)  \[11.64\times {{10}^{30}}\]        

    B)  \[1.64\times {{10}^{37}}\]

    C)  \[0.1064\times {{10}^{35}}\]     

    D) \[21.64\times {{10}^{39}}\]

    Correct Answer: B

    Solution :

                     \[\Delta G{}^\circ =-RT\] In\[{{K}_{c}}\] \[-212300J=-(\text{ }8.314\text{ }J{{K}^{-1}}mo{{l}^{-1}})(298K)\]In\[{{K}_{c}}\] ln            \[{{K}_{c}}=\frac{212300}{8.314\times 293}=85.69\]                 \[{{K}_{c}}=1.64\times {{10}^{37}}\]


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