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NEET Sample Paper NEET Sample Test Paper-38

  • question_answer
    The equilibrium constant for the reaction: \[Cu+2A{{g}^{+}}(aq)\xrightarrow{{}}C{{u}^{2+}}(aq)+2Ag;{{E}^{o}}=0.46\,V\] at 298 K is

    A) \[2.0\times {{10}^{10}}\]    

    B) \[3.9\times {{10}^{15}}\]

    C) \[4.0\times {{10}^{10}}\]    

    D) \[2.4\times {{10}^{10}}\]

    Correct Answer: B

    Solution :

     \[{{E}^{o}}=\frac{0.059}{2}\,\log {{K}_{C}}\] \[0.46=\frac{0.059}{2}\log {{K}_{C}}\] \[\log {{K}_{C}}=15.59\]? \[\Rightarrow \]\[{{K}_{C}}=3.9\times {{10}^{15}}\]


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