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JEE Main & Advanced Chemistry Equilibrium / साम्यावस्था Question Bank Le-Chatelier principle and it's application

  • question_answer
    Consider the reaction \[HC{{N}_{(aq)}}\] ⇌ \[H_{(aq)}^{+}+CN_{(aq)}^{-}\] . At equilibrium, the addition of \[CN_{(aq)}^{-}\] would             [NCERT 1979]

    A)                 Reduce \[HC{{N}_{(aq)}}\] concentration

    B)                 Decrease the \[H_{(aq)}^{+}\] ion concentration

    C)                 Increase the equilibrium constant

    D)                 Decrease the equilibrium constant

    Correct Answer: B

    Solution :

              At equilibrium, the addition of \[{{(CN)}^{-}}\]would decrease the \[({{H}^{+}})\]ion concentration to produce more and more HCN to nullified the increase of \[C{{N}^{-}}_{aq}\].


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