dissolved
in 2.5 litre of water such that its osmotic pressure is 0.75 atm at 27°C. (R
=0.0821 L atm 
)
[3]
Or
Determine the osmotic pressure of a solution prepared by
dissolving 25 mg of 
in
2 litre of water at 25°C, assuming that it is completely dissociated. 
[3]
Answer:
Osmotic
pressure
Molar mass
of 
M =
Molarity 
[1]
T = 300 K, I
= van't Hoff factor = 2.47
[1]
Or
(complete
ionization, x = 1)
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