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

  • question_answer The correct representation for solubility product of \[Sn{{S}_{2}}\]is                                                 [CPMT 1977; MP PET 1999;RPMT 2000]

    A)                 \[3\times {{10}^{-2}}\,M\]          

    B)                 \[[S{{n}^{2+}}]\,\,{{[{{S}^{2-}}]}^{2}}\]

    C)                 \[[S{{n}^{2+}}]\,\,[2{{S}^{2-}}]\]              

    D)                 \[[S{{n}^{4+}}]\,\,{{[2{{S}^{2-}}]}^{2}}\]

    Correct Answer: A

    Solution :

               \[Sn{{S}_{2}}\] ⇌ \[S{{n}^{4+}}+2{{S}^{2-}}\]                                 \[\therefore \,{{K}_{sp}}=[S{{n}^{4+}}]\,\,{{[{{S}^{2-}}]}^{2}}\]

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