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DUMET Medical DUMET Medical Solved Paper-2010

  • question_answer
    What is the osmotic pressure of a 0.0020 mol \[d{{m}^{-3}}\] sucrose \[({{C}_{12}}{{H}_{22}}{{O}_{11}})\] solution at \[{{20}^{o}}C\]? (Molar gas constant, \[R=8.314\,J{{K}^{-1}}mo{{l}^{-1}}\];\[1\,\,d{{m}^{3}}=0.001\,{{m}^{3}}\])

    A)  4870 Pa          

    B)  4.87 Pa

    C)  0.00487 Pa       

    D)  0.33 Pa

    Correct Answer: B

    Solution :

    Osmotic pressure, \[\pi =CRT\] \[=\frac{0.0020}{1000}\,(mol{{m}^{-3}})\times \frac{8.314}{101.266}\] \[(L\,\,atm\,{{K}^{-1}}mo{{l}^{-1}})\times 293\,K\] \[=4.87\times {{10}^{-3}}atm\] = 4.87 Pa


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