Solutions Question 298
Question: A solution of urea contain 8.6 gm/litre (mol. wt. 60.0). It is isotonic with a 5% solution of a non-volatile solute. The molecular weight of the solute will be [MP PMT 1986]
Options:
A) 348.9
B) 34.89
C) 3489
D) 861.2
Show Answer
Answer:
Correct Answer: A
Solution:
For two non-electrolytic solution if isotonic, $ C_1=C_2 $ \ $ \frac{8.6}{60\times 1}=\frac{5\times 1000}{m.,wt.\times 100} $ \ $ m=348.9 $
