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

  • question_answer A saturated solution of \[A{{g}_{2}}S{{O}_{4}}\]is \[2.5\times {{10}^{-2}}\]M; The value of its solubility product is              [Pb.CET 2004]

    A)                 \[62.5\times {{10}^{-6}}\]            

    B)                 \[6.25\times {{10}^{-4}}\]

    C)                 \[15.625\times {{10}^{-6}}\]       

    D)                 \[3.125\times {{10}^{-6}}\]

    Correct Answer: A

    Solution :

               For \[A{{g}_{2}}S{{O}_{4}}\to \underset{2x}{\mathop{2A{{g}^{+}}}}\,+\underset{x}{\mathop{SO_{4}^{--}}}\,\]                    \[{{K}_{sp}}={{(2x)}^{2}}.x\] ; \[{{K}_{sp}}=4{{x}^{3}}\] ; \[{{K}_{sp}}=4\times {{(2.5\times {{10}^{-2}})}^{3}}\]                                 \[{{K}_{sp}}=62.5\times {{10}^{-6}}\]

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