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NEET Sample Paper NEET Sample Test Paper-46

  • question_answer
    What will be the \[{{H}^{+}}\] ion concentration when 4 gm \[NaOH\] dissolved in 1000 ml. of water -

    A) \[{{10}^{-1}}\]

    B)                    \[{{10}^{-13}}\]

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

    D)                    \[{{10}^{-10}}\]

    Correct Answer: B

    Solution :

    \[[O{{H}^{-}}]\,\,=\,\,\frac{4}{40}\,\,=\,\,{{10}^{-1}}\,\,\Rightarrow \,\,[{{H}^{+}}]\,\,=\,\,\frac{{{10}^{-14}}}{{{10}^{-1}}}\,\,=\,\,{{10}^{-13}}\]


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