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JEE Main & Advanced Chemistry Equilibrium / साम्यावस्था Question Bank Critical Thinking

  • question_answer
    Hydrogen ion concentration of an aqueous solution is \[1\times {{10}^{-4}}M\]. The solution is diluted with equal volume of water. Hydroxyl ion concentration of the resultant solution in terms of mol \[d{{m}^{-3}}\] is      [KCET 2001]

    A)                 \[1\times {{10}^{-8}}\]  

    B)                 \[1\times {{10}^{-6}}\]

    C)                 \[2\times {{10}^{-10}}\]               

    D)                 \[0.5\times {{10}^{-10}}\]

    Correct Answer: C

    Solution :

               \[[{{H}^{+}}]=1\times {{10}^{-4}}M\Rightarrow [{{H}^{+}}]\,\,[O{{H}^{-}}]=1\times {{10}^{-14}}\]                                 \\[[O{{H}^{-}}]=\frac{1\times {{10}^{-14}}}{0.5\times {{10}^{-4}}}=2\times {{10}^{-10}}\]M


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