0
You visited us 0 times! Enjoying our articles? Unlock Full Access!
Question

# Mole fraction of solvent in an aqueous solution is 0.8. What is the molality of this solution in mol/kg?

A
$$13.88$$
B
$$55.55$$
C
$$27.77$$
D
$$6.94$$
Solution
Verified by Toppr

#### Correct option is B. $$13.88$$$$X_{solvent} = 0.8$$$$X_{solute} = 0.2$$$$m = \dfrac{X_{solute}}{X_{solvent}} \times \dfrac{1000}{18} = \dfrac{0.2}{0.8} \times \dfrac{1000}{18} = \dfrac{250}{18} = 13.88 mol/kg$$

9
Similar Questions
Q1
The mole fraction of a solvent in aqueous solution of a solute is 0.8. The molality (in mol kg1) of the aqueous solution is:
(JEE Main-2019)
View Solution
Q2
What is mole fraction of solvent in aqueous solution of NaOH having molality 3
View Solution
Q3
Mole fraction of solvent in aqueous solution of naoh having molality of 3 is ?
View Solution
Q4
18.Mole fraction of solvent in aqueous solution of NaOH having molality 3 is
View Solution
Q5
Calculate the molality of a 1.5 M aqueous salt solution in a solvent X, if the mole fraction of the salt in the solution is 0.25.
(Molar mass of solvent = 40 g/mol)
View Solution