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

  • question_answer
    In a solution of \[pH=5,\] more acid is added in order to reduce the \[pH=2.\] The increase in hydrogen ion concentration is                [MP PET 1989; CPMT 1990]

    A)                 100 times            

    B)                 1000 times

    C)                 3 times

    D)                 5 times

    Correct Answer: B

    Solution :

               \[{{[{{H}^{+}}]}_{\text{I}}}={{10}^{-5}}\] \[{{[{{H}^{+}}]}_{\text{II}}}={{10}^{-2}}\]                                 Thus increase in \[[{{H}^{+}}]=\frac{{{10}^{-2}}}{{{10}^{-5}}}=1000\]times


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