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  4. 1 g of polymer having molar mass 1,60,000 g is dissolved in 800 mL water. Calculate the osmotic pressure in pascal at 27°C. (R = 8.314 J K-1mole-1)

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Q. 1 g of polymer having molar mass 1,60,000 g is dissolved in 800 mL water. Calculate the osmotic pressure in pascal at 27$^{\circ}$C.
$(R \,= \,8.314\, J \,K^{-1}mole^{-1})$

AIIMSAIIMS 2018Solutions

Solution:

$\pi=$CRT
$\pi=\frac{1}{1.6\times10^{5}}\times\frac{8.314\times300}{800\times10^{-6}}=19.4 Pa$