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

  • question_answer
    The pH of \[{{10}^{-8}}\]molar aqueous solution of \[HCl\]is [CPMT 1988; MNR 1983, 90; MP PMT 1987; IIT 1981; BHU 1995; AFMC 1998; MP PET 1989, 99; BCECE 2005]

    A)                 \[-8\]

    B)                 8

    C)                 \[6>7\] (Between 6 and 7)

    D)                 \[7>8\] (Between 7 and 8)

    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 \[{{10}^{-8}}\]


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