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NEET Sample Paper NEET Sample Test Paper-57

  • question_answer
    What is the solubility of methane in benzene at 298k under 760 mm Hg. If \[{{K}_{H}}\] for the molarity of methane in benzene at 298 k is\[4.27\times {{10}^{5}}mm\] Hg.

    A) \[1.78\times {{10}^{-3}}\]                    

    B) \[1.4\times {{10}^{-3}}\]

    C) \[1.2\times {{10}^{-3}}\]                     

    D) \[1.5\times {{10}^{-3}}\]

    Correct Answer: A

    Solution :

    [a] \[{{k}_{H}}=4.27\times {{10}^{5}}mm\] \[P=760\,mm\] Apply Henry's law, \[P={{K}_{H}}x\] \[\therefore \,x=\frac{p}{{{k}_{H}}}=\frac{760\,mm}{4.27\times {{10}^{5}}mm}\] Mole fraction of benzene \[=1.78\times {{10}^{-3}}\]


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