A) 0.027
B) 0.036
C) 0.018
D) 0.009
Correct Answer: C
Solution :
Molality of solution = Mole of solute per kg of solvent |
So 1 m = 1 mole of solute per 1000 g of solvent |
Hence, moles of solute in 1 m aqueous solvent = 1 |
moles of solvent in 1 m aqueous solution |
\[=\frac{1000}{18}=55.55\] |
Mole fraction of solute in 1 m solution |
\[=\frac{1}{1+55.55}=\frac{1}{56.55}=0.0176\approx 0.018\] |
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