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JEE Main & Advanced Chemistry Solutions / विलयन Question Bank Osmosis and Osmotic pressure of the solution

  • question_answer
    Osmotic pressure of a urea solution at \[{{10}^{o}}C\] is \[500\,\,mm.\] Osmotic pressure of the solution become 105.3 mm. When it is diluted and temperature raised to \[{{25}^{o}}C.\] The extent of dilution is                                          [MP PET 2004]

    A)                 6 Times

    B)                 5 Times

    C)                 7 Times 

    D)                 4 Times

    Correct Answer: B

    Solution :

     \[\pi V=n\,RT\]                                 \[\frac{500{{V}_{1}}}{105.3{{V}_{2}}}=\frac{nR\times 283}{nR\times 298}\] ;  \[\frac{{{V}_{1}}}{{{V}_{2}}}=\frac{1}{5}\] so \[{{V}_{2}}=5{{V}_{1}}\]


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