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

  • question_answer
    Hydrogen ion concentration in mol/L in a solution of \[pH=5.4\] will be   [AIEEE 2005]

    A)                 \[3.98\times {{10}^{8}}\]             

    B)                 \[3.88\times {{10}^{6}}\]

    C)                 \[3.68\times {{10}^{-6}}\]            

    D)                 \[3.98\times {{10}^{-6}}\]

    Correct Answer: D

    Solution :

               \[pH=-\log \,[{{H}^{+}}]\]                                 \[5.4=-\log \,[{{H}^{+}}]\];  \[[{{H}^{+}}]=3.98\times {{10}^{-6}}\].


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