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NEET Sample Paper NEET Sample Test Paper-8

  • question_answer
    Given the data at \[{{25}^{o}}C\] \[Ag+{{I}^{-}}\xrightarrow{{}}AgI+{{e}^{-}};\]   \[{{E}^{o}}=0.152\,V\] \[Ag\xrightarrow{{}}A{{g}^{+}}+{{e}^{-}};\] \[{{E}^{o}}=-0.800V\] What is the vlaue of log \[{{K}_{SP}}\] for \[AgI\]?                         \[\left( 2.303\frac{RT}{F}=0.059\,V \right)\]

    A)  \[-8.12\]                             

    B)  \[+8.612\]

    C)  \[-37.83\]                          

    D)  \[-16.13\]

    Correct Answer: D

    Solution :

    \[Ag{{I}_{(s)}}+{{e}^{-}}A{{g}_{(s)}}+{{I}^{-}}\,;\,\,\,{{E}^{o}}=-0.152\] \[\underset{Ag{{I}_{(s)}}\xrightarrow{{}}A{{g}^{+}}+{{I}^{-}}\,\,;\,\,\,\,\,\,\,\,\,\,\,{{E}^{o}}=-0.952}{\mathop{\underset{\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_}{\mathop{A{{g}_{(s)}}\xrightarrow{{}}A{{g}^{+}}+{{e}^{-}}\,;\,\,\,\,\,\,{{E}^{o}}=-0.8}}\,}}\,\] \[E_{cell}^{o}=\frac{0.059}{1}\log \,{{K}_{SP}}\] \[-0.952=\frac{0.059}{1}\log {{K}_{SP}}\] \[\log \,\,{{K}_{SP}}=\frac{-0.952}{0.059}=-16.135\]


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