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=5×18×2.50.04×80=70.31



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