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12th Class Chemistry Solutions / विलयन Question Bank Case Based - Solutions

  • question_answer
    The partial pressure of ethane over a saturated solution containing \[6.56\times {{10}^{-2}}\text{ }g\] of ethane is 1 bar. If the solution contains \[5.00\times {{10}^{-2}}\text{ }g\]of ethane then what will be the partial pressure (in bar) of the gas?

    A) 0.762

    B) 1.312

    C) 3.81

    D) 5.0

    Correct Answer: A

    Solution :

    According to Henry's law, \[m={{K}_{H}}\times p\] \[6.56\times {{10}^{-2}}={{K}_{H}}\times 1\] \[{{K}_{H}}=6.56\times {{10}^{-2}}\] For another case, \[5\times {{10}^{-2}}=6.56\times {{10}^{-2}}\times p\] \[p=\frac{5\times {{10}^{-2}}}{6.56\times {{10}^{-2}}}=0.762\,\,bar\]


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