JEE Main & Advanced Chemistry Equilibrium Question Bank Common ion effect, Isohydric solutions, Solubility product, Ionic product of water and salt hydrolysis

  • question_answer The precipitate of  \[Ca{{F}_{2}}\]\[({{K}_{sp}}=1.7\times {{10}^{-10}})\] is obtained when equal volumes of the following are mixed [IIT 1992; UPSEAT 2000]

    A)                 \[{{10}^{-4}}M\,C{{a}^{2+}}+{{10}^{-4}}M\,{{F}^{-}}\]

    B)                 \[{{10}^{-2}}M\,C{{a}^{2+}}+{{10}^{-3}}M\,{{F}^{-}}\]

    C)                 Both

    D)                 None of these

    Correct Answer: B

    Solution :

               When ionic product is greater than \[{{K}_{sp}}\] then precipitation occur                                 \[{{K}_{sp}}<{{10}^{-2}}M\,\,C{{a}^{2+}}+{{10}^{-3}}M\,\,{{F}^{-}}\]

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