Solutions Question 50
Question: $ 0.6,g $ of a solute is dissolved in $ 0.1,litre $ of a solvent which develops an osmotic pressure of 1.23 atm at $ 27^{o}C $ . The molecular mass of the substance is [BHU 1990]
Options:
A) $ 149.5,g,mol{e^{-1}} $
B) $ 120,g,mol{e^{-1}} $
C) $ 430,g,mol{e^{-1}} $
D) None of these
Show Answer
Answer:
Correct Answer: B
Solution:
$ m=\frac{wRT}{PV}=\frac{0.6\times 0.082\times 300}{1.23\times 0.1}=120 $
