Question

Calculate the volume of solution that will give rise to an osmotic pressure of $1atmat{127}^{\circ }C$ if the solution contains 2 moles of solute at the same temperature?

• A. $247.78L$
• B. $65.68L$
• C. $106.27L$
• D. $8.21L$

Answer 1

The correct option is B $65.68L$

Osmotic pressure:

$\pi =\frac{n}{V}\times RT$

Here ,

$\pi =1atmR=0.0821Latmmo{l}^{-1}{K}^{-1}n=2molT={127}^{\circ }C=400K$

$V=\frac{n\times R\times T}{\pi }V=\frac{2\times 0.0821\times 400}{1}V=65.68L$