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

  • question_answer
    The \[pH\] of a \[{{10}^{-9}}M\] solution of \[HCl\] in water is  [UPSEAT 2000, 02]

    A)                 8             

    B)                 ? 8

    C)                 Between 7 and 8             

    D)                 Between 6 and 7

    Correct Answer: D

    Solution :

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


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