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

  • question_answer
    \[pH\] of \[HCl\,({{10}^{-12}}M)\]is         [CPMT 1997; Pb. PET/PMT 1999]

    A)                 12          

    B)                 \[-12\]

    C)                 \[\approx 7\]    

    D)                 14

    Correct Answer: C

    Solution :

                    As the solution is acidic \[pH<7\]. This is because \[[{{H}^{+}}]\] from \[{{H}_{2}}O\,\,[{{10}^{-7}}]\] cannot be neglected in comparison to \[{{10}^{-12}}\]M.


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