The osmotic pressure at $17^{\circ} C$ of an aqeuous solution containing $1.75 g$ of sucrose per $150 m L$ solution is

0.8 a t m

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0.08 a t m

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8.1 a t m

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9.1 a t m

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Solution

The correct option is A $0.8 a t m$
$Osmotic pressure (π) = C R T = \frac{n}{V} R T = \frac{\frac{1.75}{342}}{\frac{150}{1000}} \times 0.0821 \times 290$
$= 0.8095 \approx 0.81 a t m$

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