JEE Main & Advanced Chemistry Equilibrium / साम्यावस्था Question Bank Critical Thinking

  • question_answer
    The solubility product of a binary weak electrolyte is \[4\times {{10}^{-10}}\] at \[298\,K\]. Its solubility in mol \[d{{m}^{-3}}\] at the same temperature is              [KCET 2001]

    A)                 \[4\times {{10}^{-5}}\]  

    B)                 \[2\times {{10}^{-5}}\]

    C)                 \[8\times {{10}^{-10}}\]               

    D)                 \[16\times {{10}^{-20}}\]                

    Correct Answer: B

    Solution :

               AB  ⇌ \[{{A}^{+}}+{{B}^{-}}\];\[{{K}_{sp}}={{S}^{2}}\]                                 \[S=\sqrt{{{K}_{sp}}}=\sqrt{4\times {{10}^{-10}}}=2\times {{10}^{-5}}\]


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