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

  • question_answer
    When \[{{10}^{-8}}\]mole of \[HCl\] is dissolved in one litre of water, the \[pH\]of the solution will be [CPMT 1973, 94; DPMT 1982]

    A)                 8             

    B)                 7

    C)                 Above 8              

    D)                 Below 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 \[{{10}^{-8}}\]. 


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