CET Karnataka Medical CET - Karnataka Medical Solved Paper-2010

  • question_answer
    The standard emf of galvanic cell involving 3 moles of electrons in its redox reaction is 0.59 V. The equilibrium constant for the reaction of the cell is

    A)  \[{{10}^{25}}\]            

    B)  \[{{10}^{20}}\]

    C)  \[{{10}^{15}}\]            

    D)  \[{{10}^{30}}\]

    Correct Answer: D

    Solution :

    \[E_{cell}^{o}=\frac{0.0591}{n}{{\operatorname{logK}}_{c}}\] \[0.59=\frac{0.0591}{3}\log {{K}_{c}}\] \[\frac{0.59\times 3}{0.059}=\log {{K}_{c}}\] \[\therefore \] \[\log {{K}_{c}}=30\] \[{{K}_{c}}=\text{antilog 30}\] \[={{10}^{30}}\]


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