RAJASTHAN PMT Rajasthan - PMT Solved Paper-1996

  • question_answer
    The solubility product of \[BaS{{O}_{4}}\]is\[1\times {{10}^{-12}}\]. What will be the concentration of barium ions in its saturation solution?

    A)  \[1\times {{10}^{6}}\]

    B)                         \[1\times {{10}^{-6}}\]

    C)                         \[1\times {{10}^{12}}\]    

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

    Correct Answer: B

    Solution :

    \[\underset{(a)}{\mathop{BaS{{O}_{4}}}}\,\underset{(s)}{\mathop{B{{a}^{++}}}}\,+\underset{(s)}{\mathop{S{{O}_{4}}^{-\,\,-}}}\,\] \[{{K}_{sp}}={{s}^{2}}\] \[s=\sqrt{{{K}_{sp}}}\] \[=\sqrt{1\times {{10}^{-12}}}=1\times {{10}^{-6}}\]


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