First slide

Theory of dilute solutions

Question

The osmotic pressure of a sugar solution at 24 $°$ C is 2.5 atm. The concentration of the solution in mole per litre is

Moderate

A

10.25
B

1.025
C

1025
D

0.1025

Solution

$π = CRT \Rightarrow 2.5 = C \times 0.082 \times 297 ∴ C = 0.1025 mol L^{- 1}$

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