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.
