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

  • question_answer In hydrolysis of a salt of weak acid and strong base, \[{{A}^{-}}+{{H}_{2}}O\] ⇄ \[HA+O{{H}^{-}},\] the hydrolysis constant \[({{K}_{h}})\] is equal to.?                                         [Orissa JEE 2002]

    A)                 \[\frac{{{K}_{w}}}{{{K}_{a}}}\]   

    B)                 \[\frac{{{K}_{w}}}{{{K}_{b}}}\]

    C)                 \[\sqrt{\frac{{{K}_{a}}}{C}}\]      

    D)                 \[\frac{{{K}_{w}}}{{{K}_{a}}\times {{K}_{b}}}\]

    Correct Answer: A

    Solution :

                    Hydrolysis constant \[h=\frac{{{K}_{w}}}{{{K}_{a}}}\]

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