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NEET Sample Paper NEET Sample Test Paper-36

  • question_answer
    The solubility product of AgI at \[25{}^\circ C\] is \[1.0\times {{10}^{-16}}\,mo{{l}^{2}}{{L}^{-2}}.\]The solubility of AgI in \[{{10}^{-4}}\,N\]solution of KI at \[25{}^\circ C\] is approximately (in mol\[{{L}^{-1}}\])

    A) \[1.0\times {{10}^{-10}}\]

    B) \[1.0\times {{10}^{-8}}\]

    C) \[1.0\times {{10}^{-16}}\]

    D) \[1.0\times {{10}^{-12}}\]   

    Correct Answer: A

    Solution :

     For \[HI\rightleftharpoons \frac{1}{2}{{H}_{2}}+\frac{1}{2}{{I}_{2}};{{K}_{{{C}_{1}}}}=8\] Reverse given eqn. and multiply by 2. \[\therefore \] For \[{{H}_{2}}+{{I}_{2}}\rightleftharpoons 2HI;\,{{K}_{{{C}_{2}}}}={{\left( \frac{1}{{{K}_{{{c}_{1}}}}} \right)}^{2}}\] \[={{\left( \frac{1}{8} \right)}^{2}}=\frac{1}{64}\]


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