Solutions Question 172

Question: The mole fraction of the solute in one molal aqueous solution is [CBSE PMT 2005]

Options:

A) 0.027

B) 0.036

C) 0.018

D) 0.009

Show Answer

Answer:

Correct Answer: C

Solution:

$ W=1000,gm $

$ (H_2O) $ ; $ n=1 $ mole $ N=\frac{W}{M}=\frac{1000}{18}=55.55 $

$ {x_{Solute}} $ = $ \frac{n}{n+N}=\frac{1}{1+55.55} $ = 0.018.



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