Question

The relationship between osmotic pressure at $273K$ when $10g$ glucose $(P_{1}),10g$ urea $(P_{2})$ and $10g$ sucrose $(P_{3})$ are dissolved in $250ml$ of water is.

• A. $P_{1} > P_{2} > P_{3}$
• B. $P_{3} > P_{1} > P_{2}$
• C. $P_{2} > P_{1} > P_{3}$
• D. $P_{2} > P_{3} > P_{1}$

Answer 1

Answer: (C)

$P_{2} > P_{1} > P_{3}$

Answer 2

$P = \frac{w}{mv}R.T$ since wvT are constant thus $P \propto \frac{1}{m}$

$P_{2} > P_{1} > P_{3}$.