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NEET Sample Paper NEET Sample Test Paper-11

  • question_answer
    A solution contains non-volatile solute of molecular mass\[{{M}_{2}}\]. Which of the following can be used to calculate the molecular mass of solute in terms of osmotic pressure? Note: (\[{{m}_{2}}=\]mass of solute, V = volume of solution, \[\pi =\]osmotic pressure)

    A) \[{{M}_{2}}=\left( \frac{{{m}_{2}}}{\pi } \right)VRT\]   

    B) \[{{M}_{2}}=\left( \frac{{{m}_{2}}}{V} \right)\frac{RT}{\pi }\]

    C) \[{{M}_{2}}=\left( \frac{{{m}_{2}}}{V} \right)\pi RT\]   

    D) \[{{M}_{2}}=\left( \frac{{{m}_{2}}}{V} \right)\frac{\pi }{RT}\]

    Correct Answer: B

    Solution :

    We know, \[\pi =CRT\] \[\pi =\frac{n}{V}RT\]    \[\pi V=\frac{{{m}_{2}}}{{{M}_{2}}}RT\]


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