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Osmotic Pressure

The value of ...

Question

The value of osmotic pressure of a $0.2 M$ aqueous solution at $293 K$ is

0.48 a t m

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4.0 a t m

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4.8 a t m

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8.4 a t m

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Solution

The correct option is C $4.8 a t m$
as,

$π = C R T$
here,
$C = 0.2 M, T = 293 K$
then,
$π = 0.2 \times 0.0821 \times 293$
$π = 4.8 a t m$

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The density of a 9.5% by mass solution of fructose $(C_{6} H_{12} O_{6})$ is $1.036 g / c m^{3}$ at 293k. Calculate the osmotic pressure of solution.

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