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NEET Sample Paper NEET Sample Test Paper-49

  • question_answer
    \[M\,\,\left( OH \right)x\] has a \[{{K}_{sp}}\text{ }of\text{ }4\,\,\times \,\,{{10}^{-}}^{9}\] and its solubility is \[{{10}^{-3}}\] M. The value of x is:

    A) 4         

    B)               1

    C) 3                                 

    D) 2

    Correct Answer: D

    Solution :

    \[M{{(OH)}_{x}}\,\,\to \,\,{{M}^{+x}}\,+\,xO{{H}^{-}}\,\] \[{{10}^{-3}}\,\,\,\,\,\,\,\,x\,\,\times \,\,{{10}^{-3}}\] \[{{10}^{-3}}{{\left( {{10}^{-3}}x \right)}^{x}}=4\times {{10}^{-}}^{9}\] \[x=2\]


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