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Osmotic Pressure and Osmotic Potential

What should b...

Question

What should be the Osmotic pressure of a solution of Urea in water at 30 degree Celsius which has boiling point 0.052 Kelvin higher than the pure water assume molarity and molality to be the same.kb for water is 0.52kg mol

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Solution

$F i r s t c a l c u l a t e t h e m o l a l i t y o f t h e s o l u t i o n ∆ T_{b} = K_{b} \times m m = \frac{∆ T_{b}}{K_{b}} = \frac{0.052}{0.52} = 0.1 m S i n c e m o l a r i t y = m o l a i t y = 0.1 O s m o t i c p r e s s u r e π = CRT = 0.1 \times 0.0821 \times 303 = 2.49 atm$

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