Question

The relationship between osmotic pressure at 273 K when 10 g glucose $\left(P_1\right)$, 10 g urea $\left(P_2\right)$ and 10 g sucrose $\left(P_3\right)$ are dissolved in 250 mL 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

The correct option is C

$P_2=P_1=P_3$

$\pi$ = iCRT

i, R and T is same for all

Hence, $\pi \propto C$

Where C is concentration, all pressures are equal!