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

  • question_answer
    If the pH of a solution of an alkali metal hydroxide is 13.6, the concentration of hydroxide is         [JIPMER 2000]

    A)                 Between 0.1 M and 1 M

    B)                 More than 1 M

    C)                 Less than 0.001 M

    D)                 Between 0.01 M and 1 M

    Correct Answer: A

    Solution :

               \[pH=13.6\]                    \[pOH=14-13.6=0.4\]                                 \[[O{{H}^{-}}]=\text{Antilog}\,\,(-0.4)=0.3979\]. So the value of  \[[O{{H}^{-}}]\,\,\text{between}\,\,0.1\,\,M\,\,and\,\,1\,\,M\]


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