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

  • question_answer
    The hydrogen ion concentration of 0.001 \[M\,\,NaOH\] solution is                                         [AFMC 1983]

    A)                 \[1\times {{10}^{-2}}mole/litre\]             

    B)                  \[1\times {{10}^{-11}}mole/litre\]

    C)                 \[1\times {{10}^{-14}}mole/litre\]           

    D)                 \[1\times {{10}^{-12}}mole/litre\]

    Correct Answer: B

    Solution :

               0.001 M \[NaOH\]means \[[O{{H}^{-}}]={{10}^{-3}}\]; \[pOH=3\]                    \[pH+pOH=14;\,\,pH=14-3\]                                 \[pH=11\];  \[[{{H}^{+}}]={{10}^{-11}}\]mole-litre?1


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