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

  • question_answer The expression for the solubility product of \[A{{l}_{2}}\,{{(S{{O}_{4}})}_{3}}\]is

    A)                 \[{{K}_{sp}}=[A{{l}^{3+}}]\,\,(SO_{4}^{2-}]\]      

    B)                 \[{{K}_{sp}}={{[A{{l}^{3+}}]}^{2}}\,\,{{(SO_{4}^{2-}]}^{3}}\]

    C)                 \[{{K}_{sp}}={{[A{{l}^{3+}}]}^{3}}\,\,{{(SO_{4}^{2-}]}^{2}}\]        

    D)                 \[{{K}_{sp}}={{[A{{l}^{3+}}]}^{2}}\,\,{{(SO_{4}^{2-}]}^{2}}\]

    Correct Answer: B

    Solution :

               Solubility of \[A{{l}_{2}}{{(S{{O}_{4}})}_{3}}\]            \[A{{l}_{2}}{{(S{{O}_{4}})}_{3}}\] ⇌ \[2A{{l}^{+++}}+3SO_{4}^{-\,-}\]                                 \[{{K}_{sp}}={{[A{{l}^{3+}}]}^{2}}\,{{[SO_{4}^{2-}]}^{3}}\]


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