Q. The relationship between osmotic pressure at 273 K when 10 g glucose $(p_{1})$, 10 g urea $(p_{2})$ and 10 g sucrose $(p_{3})$ are dissolved in 250 mL of water is
A) $p_{1} > p_{2} > p_{3}$
B) $p_{3} > p_{2} > p_{1}$
C) $p_{2} > p_{1} > p_{3}$
D) $p_{2} > p_{3} > p_{1}$
Explanation
(c)
$p = \frac{w}{mV}RT$, Since, $wRT/V$are constant thus, $p \propto \frac{1}{m}$
$\therefore p_{2} > p_{1} > p_{3}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.