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CET Karnataka Medical CET - Karnataka Medical Solved Paper-2014

  • question_answer
    For hydrogen - oxygen fuel cell at one atm and 298 K \[{{H}_{2(g)}}+\frac{1}{2}{{O}_{2(g)}}\to {{H}_{2}}{{O}_{(l)}};\,\,\Delta {{G}^{o}}=-240kJ\] \[{{E}^{o}}\] for the cell is approximately, (Given: \[F=96,500C\])

    A)  \[2.48V\]        

    B)  \[1.24V\]

    C)  \[2.5V\]  

    D)  \[1.26V\]

    Correct Answer: B

    Solution :

    :  \[\Delta {{G}^{o}}=-nF{{E}^{o}}\]     \[-240000=-2\times 96,500\times {{E}^{o}}\] \[{{E}^{o}}=1.24V\]


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