Question

What is the mole fraction of the solute in a $1.00$ m aqueous solution?

• A. $0.03554$
• B. $0.0177$
• C. $0.177$
• D. $1.770$

Answer 1

The correct option is B $0.0177$

1.00 m aqueous solution means 1 mole of solute in 1 kg of water.

1 kg of water corresponds to $\frac{1000}{18}=55.56$ moles.

The mole fraction of solute is $\frac{1}{1+55.56}=0.0177$.

Hence, the correct option is $B$