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

  • question_answer
    pH of human blood is 7.4. Then \[{{H}^{+}}\] concentration will be [RPMT 2002]

    A)                 \[4\times {{10}^{-8}}\]  

    B)                 \[2\times {{10}^{-8}}\]

    C)                 \[4\times {{10}^{-4}}\]  

    D)                 \[2\times {{10}^{-4}}\]

    Correct Answer: A

    Solution :

                    \[pH=-\log [{{H}^{+}}]\];\[7.4=-\log [{{H}^{+}}]\]; \[[{{H}^{+}}]=4\times {{10}^{-8}}M\]


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