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NEET Sample Paper NEET Sample Test Paper-93

  • question_answer
    An aqueous solution of sucrose, \[{{C}_{12}}{{H}_{22}}{{O}_{11}},\] containing 34.2 g has an osmotic pressure of 2.38 atmospheres at \[17{}^\circ C.\] For an aqueous solution of glucose, \[{{C}_{6}}{{H}_{12}}{{O}_{6}}\] to be isotonic with this solution, it would have

    A) 34.2 g/lit           

    B)        17.1 g/lit

    C) 18.0 g/lit           

    D)        36.0 g/lit of glucose

    Correct Answer: C

    Solution :

    [c] For isotonic solutions \[{{\pi }_{1}}={{\pi }_{2}}\]or \[{{c}_{1}}={{c}_{2}};\] \[\frac{34.2}{342}=0.1;\]\[\frac{18.0}{180}=0.1.\] Hence \[18\,\,g{{L}^{-1}}\]glucose is 0.1 M.


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