Solutions Question 6
Question: Dry air was passed successively through a solution of $ 5,gm $ of a solute in $ 80gm $ of water and then through pure water. The loss in weight of solution was $ 2.50,gm $ and that of pure solvent $ 0.04,gm $ . What is the molecular weight of the solute [MP PMT 1986]
Options:
A) 70.31
B) 7.143
C) 714.3
D) 80
Show Answer
Answer:
Correct Answer: A
Solution:
$ m=\frac{5\times 18\times 2.5}{0.04\times 80}=70.31 $
