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Haryana PMT Haryana PMT Solved Paper-2006

  • question_answer
    At \[{{90}^{o}}C\], pure water has \[{{H}_{3}}{{O}^{+}}\] ion concentration of \[{{10}^{-6}}mol/{{L}^{-1}}\]. The \[{{K}_{\omega }}\] at \[{{90}^{o}}C\] is:

    A)  \[{{10}^{-6}}\]                                 

    B)  \[{{10}^{-14}}\]

    C)  \[{{10}^{-12}}\]                               

    D)  \[{{10}^{-8}}\]

    Correct Answer: C

    Solution :

                    \[{{K}_{^{\omega }}}=[{{H}^{+}}]\,[O{{H}^{-}}]\] \[=({{10}^{-6}})\times ({{10}^{-}})\] (\[\because \] \[[{{H}^{+}}]=[O{{H}^{-}}]\])                 \[={{10}^{-12}}\]


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