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  4. The osmotic pressure of 5% (mass-volume)solution of cane sugar at 150°C (mol. mass of sugar = 342) is

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Q. The osmotic pressure of 5% (mass-volume)solution of cane sugar at 150$^\circ$C (mol. mass of sugar = 342) is

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Solution:

$5 \%$ (mass-volume) solution means $5\, g$ of sugar dissolved in $100\, mL$ water.
$\pi=\frac{n}{V} R T=\frac{5}{342} \times \frac{1000}{100} \times 0.0821 \times 423$
$=5.07 \,atm$