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JEE Main & Advanced Chemistry Equilibrium / साम्यावस्था Question Bank Hydrogenion concentration pH scale and buffer solution

  • question_answer
    The \[pH\]of an aqueous solution having hydroxide ion concentration as \[1\times {{10}^{-5}}\] is            [MP PMT 1991]

    A)                 5             

    B)                 9

    C)                 4.5         

    D)                 11

    Correct Answer: B

    Solution :

               \[[O{{H}^{-}}]=1\times {{10}^{-5}}\]            \[pOH=-\log [O{{H}^{-}}]=5\] \[pH+pOH=14\Rightarrow pH=14-5=9\].


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