Solutions Question 291
Question: Two solutions of $ KNO_3 $ and $ CH_3COOH $ are prepared separately. Molarity of both is $ 0.1,M $ and osmotic pressures are $ P_1 $ and $ P_2 $ respectively. The correct relationship between the osmotic pressures is [CPMT 1983, 84; Pb CET 2004]
Options:
A) $ P_2>P_1 $
B) $ P_1=P_2 $
C) $ P_1>P_2 $
D) $ \frac{P_1}{P_1+P_2}=\frac{P_2}{P_1+P_2} $
Show Answer
Answer:
Correct Answer: C
Solution:
$ KNO_3 $ dissociates completely while $ CH_3COOH $ dissociates to a small extent. Hence, $ P_1>P_2 $ .
